Used 2015 GMC Sierra 1500 Consumer Reviews
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2015 GMC Sierra 1500 Crew Cab SLT
papanav, 11/02/2014
updated 11/07/2022
2015 GMC Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
26 of 27 people found this review helpful
Purchased a 2015 Sierra 1500 SLT (crew cab) and traded in my 2014 Sierra 1500 SLE (double cab). I usually keep a vehicle for 10 years or more however, the only reason I traded was because of the very good incentive on the 2015 and the excellent deal I had gotten on the 2014 and the reasonable trade in price on the 2014. I now have 13,000 miles on the 2015 and feel that it is also an excellent truck with many more amenities. The safety features to include back-up camera, parking warning, lane changing, navigation and hands free make for a very safe truck. I have not been able to attain quite the mileage I got on my 2014 even though I have a tonneau cover and drive the truck in a similar manner. The best I have been able to attain is 21.6 on a long trip. The advantage of a large vehicle with plenty of interior comfort, good mileage numbers, tons of room for luggage and smooth ride made this vehicle my vehicle of choice over a sedan or suv. I will add on to the information above which has not changed. I took a long trip to Michigan and pretty much backed up what I ha determined in the first review that I sent to you. I did attain 22mpg on one leg of the trip and 21.5 on the second leg of the trip. Truck still very comfortable, spacious and has given me absolutely no problems. I have had the oil, filter and tires rotated on schedule and had one recall corrected on the airbag system. I have owned the truck now for 25 months and still feel that it is a nice looking well made vehicle. I took a recent trip and was able to get 23.0 mpg which is slightly higher than advertised. The sweet spot is right about 70mph when the 5.3L engine is in 4v and on flat terrain. In that configuration it gets excellent mileage. The other sweet spot is driving a steady 55mph when the truck is in 4v. Presently I have 22,500 miles on the odometer and I am very satisfied with the vehicle. This is my third review after owning the truck for two and a half years. I have over 27,000 miles on the truck so far with no problems. I did notice that my transmission temp was running much hotter than the allison transmission that I have in my diesel but in looking into it further I found that 190 degrees is not an unusual temperature for this engine and transmission combination. This is my fourth review of my Sierra 1500 Crew Cab with just over 37,000 miles. So far so good, the truck continues to run very well with no complaints.. I changed the oil and filter myself and was surprised to see that the 5.3 liter engine takes 8.5 quarts of 0w-20 oil. In looking at the new GMC Sierra's as well as Ford and Ram 1500 series trucks I am amazed at how many gadgets they have placed in these vehicles with a corresponding price increase. Almost all of these vehicles are now priced in the mid 60 thousand dollar price range and the manufacturers are offering 10 year financing. Unbelievable!!! I recently replaced all four tires at 46,000 miles. They were original equipment and wore well. They were Goodyear Wrangler 275/55R20's. There was still probably 10.000 miles of wear left but I am not sure they would have been good for winter 9 months from now. My first check engine light came on indicating an evaporations leak code po455. I replaced the gas cap which of course did not fix it so I will find out what the problem is when I get the truck inspected this month. The evap system leak was found and determined to be a crack in a hose that was replaced and check engine light disappeared. I have taken trips using the range plug in unit that keeps my engine running on 8 cylinders all the time and I still was getting 21.5 mpg. Still no problems to speak of and still a handsome truck. At 51,000 miles I had all the fluids changed to include transmission, coolant, differential and transaxles. I now have 63,000 on the truck. I did have to replace the battery about 6 months ago but other than that absolutely no problems.
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Very Nice Truck
John, 06/08/2016
updated 06/13/2018
2015 GMC Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
14 of 14 people found this review helpful
My '15 GMC SLT Z71 4X4 drives and rides very good. Power is pretty good, and gas mileage is better than average for a full sized half ton truck. The high hood limits close up visibility for parking. The most important thing is....my wife likes it (if Mama's happy, everybody's happy). My only complaints are...1) - the shifting of the transmission is a little mushy, and 2) - the high beams are not bright enough.
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My 1st 4k miles
electricvette, 03/02/2015
2015 GMC Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
34 of 37 people found this review helpful
This is my third Denali pick up. Huge buyers remorse buying black but that's my fault. It does look amazing few hrs after its washed. Was really wanting the 6.0 and eight speed tranny but they're so hard to come by I had to settle for the 5.3 and the six speed. My 07 had alot more power it seems. Plus it was all wheel drive. But I am getting around 16 miles per gallon instead of 13.5 with my old Denali. Still working through the countless menus on the electronics. I'm over my trial for the Wi-Fi and was not impressed.The drivetrain has a vibration at around 41 miles an hour that I need to take back to the dealer and have checked out. It was an insane amount of money but I'm not unhappy.
Comfortable Truck
KC MIller, 10/27/2015
updated 10/31/2017
2015 GMC Sierra 1500 Denali 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
16 of 17 people found this review helpful
UPDATED from 10/2015 I have owned this truck for 24 months- mileage now at 34,452. GPS roof antenna unit shorted out within a week after purchase or was likely not working when I purchased the truck. I believe it had a defective seal on the roof. Replaced by dealer. Nice looking truck. Decent fuel mileage. The truck says I am averaging over lifetime18.6mpg, it has about 23,452k miles so far. My truck has the 5.3L w/6 speed transmission/ 3.42 rear axle ratio. I opted for this engine configuration thinking it may get better mileage than the 6.2L/8 speed trans. The truck handles much like a Corvette on sharp turns at higher speeds. Not crazy about the ride; however its ride is MUCH better when carrying a heavy object in the bed or towing my utility trailer with a heavy zero turn mower loaded. I have the 4x4 Denali model which has the magnetic shocks. I drove another new GMC truck with the V-6 engine while my Denali truck was getting the GPS antenna roof unit replaced which took over a week to obtain the parts needed. I really liked the lower priced V-6 truck, although the interior creature comforts was NO comparison to my completely creature comfort-loaded Denali model, which was the reason I bought it (and the front grill). Both trucks are quiet riding. Horrible price tag. No complaints so far after 15 months (2 recalls and the info center needed updating).
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Great Riding Truck for the Money
Jersey Traveler, 03/22/2018
updated 06/14/2021
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
26 of 29 people found this review helpful
"To be honest my Tacoma was a great truck with no issues, and while I miss it, I do not regret my decision. I retired and bought a travel trailer that needed a truck that could pull it without grunting uphill. The Sierra doesn't even know it is towing it, it came with the trailer package, built in brake controller, and the Z71 package. Without the trailer the best mileage I have gotten is almost 22.4 mpg, I never got over 18 with the Tacoma. The IntelliLink system is terrific. I have upgraded the headlight bulbs to LED, making a huge improvement over the stock bulbs. At a cost of about $400, I installed the Roadmaster Active suspension kit, (about 20 minutes per side) which makes a big difference in handling, especially with the towing. I eliminated the OnStar and changed over to a factory Navigation System. No need to pay $40 a month for directions, which I don't need everyday. I also purchased a rear under seat storage box. GMC should have it as a standard item. The 5.3L engine has a light ticking sound, but I understand that is characteristic to all of them and may have something to do with the cylinder deactivation, and it doesn't bother me. The Sierra is comfortable, quiet and so to date has been dependable. I recently added an additional leaf spring through a local spring shop. The handling is much better, it didn't contribute to much harshness at all and actually made for a smoother, less bouncier and more enjoyable ride. It added more stabilization going into corners and curves, and better towing results. Mechanically this truck has been a gem and a pleasure to drive. Towing our camper, it is a beast It handles the trailer very well. At my age I don't see any more new vehicles in my future, I intend to keep this truck until I cant drive any longer. I may just put in another engine if it comes to that. I cant say anything bad about it. Hopefully it will continue to perform well for a long time to come. I have changed the trans fluid, antifreeze, hydraulics . . . fluid changes are crucial to the longevity of any vehicle and for what prices are these days for new trucks, my used Sierra is worth every cent to keep it road worthy. Compared to a Chevy Silverado I once owned, the GMC Sierra is like changing from a suit into a tuxedo. After the last big snowstorm the 4x4 traction is unbelievable. It is a keeper for sure. Lots of comments on the looks, smooth ride and fun to drive. Here it is soon to be 2020 and still rides like new! As an update it is now October of 2020, the truck has 98,000 trouble free miles, it has been a very dependable vehicle. Just had a recent oil change, no complaints with reliability. 4/13/21 Update: Right after my last update, the check engine light came on, and the engine was missing at idle. I drove immediately to my trusted mechanic where i was informed valve #7 collapsed and the cam was also damaged. I had several options and went with an engine replacement that had 45,000 miles out of a 2016, with a three year waranty for parts and labor. Once home after the replacement, I installed an AFM Disabler along with an Oil Catch Can. As much as I love the truck, doing much research I am not a fan of DI engines, and may at some point look into a Toyota Tundra. Where I do not have to worry about the topside of the intake valves not being cleaned. One engine replacement is enough. Recently the engine would bog and surge, hard downshifts. Brought it to my local shop, they found the copper wire harness connections had turned green, with intermittent loss of signals. They cleaned, sealed, reconnected all the harness connections, The truck runs like a dream. best it has been since I owned it!
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Big Mistake!!!
Sick, 03/02/2017
2015 GMC Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A)
11 of 12 people found this review helpful
So this was the first brand new vehicle I ever purchased. Yes it is beautiful. Love the big screen , dual climate controls( which I can see make a difference) and you have to have it on full blast for people in the back seat due to no vents back there. Love the nice leather interior. However, lights are horrible at night. Hard to see anything. Bluetooth worked good at first but now can't understand anything. Weird! The back glass leaked and stained the headliner. It's in the shop as we speak. The WORST thing is since about 5,000 miles it has had a clunking noise after going 5-10 in traffic then speed up it clunks and jerks super hard! I've had it to dealer four times they say " oh that's just nothing, that's just how these new vehicles shift" BS. I work hard for my money and for what I paid for this GM needs to fix it! I would think twice maybe three or four times before I buy one.
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NOT Professional Grade (GMC "Shakerra")
Shane, 01/17/2017
updated 01/18/2018
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A)
23 of 28 people found this review helpful
10/15/17 ***UPDATE - GM Bought the TRUCK BACK DUE TO LEMON LAW Breach of Contract*** "What should other shoppers know before buying this car?" Simple: Don't Buy this Truck! It's so poorly constructed and over-engineered. Trust me when I tell you that I have always relied heavy on Edmund's reviews and this time I did not. What a mistake and my 15' Sierra now has a lemon law case against it. The transmission in this truck is so poor and off-spec. Took it back to a "certified" GMC repair shop [aka the dealer I bought it] and they cannot figure out the problem. It's been to the shop 6+ times for the transmission alone, all of which have been noted and recorded issues with the service manager and they have made repair attempts. The whole cabin SHAKES at all speeds (seat, pedal, center console) They flushed the transmission twice, as per corporate GM. The had to replace the TCM (Transmission Control Module) twice. The Driver seat was not bolted down or defective. They repaired that with a "Shim". GMC is terrible as is there corporate operation. I really should have looked into a Ford or Ram. Please listen to my headache and do not purchase any GMC Sierra / Chevy Silverado years 2014 and above as they still have not found a resolution to the shaking issue. My repair list is too long to mention everything that has gone wrong ... all for a 50K plus truck. NOT professional GRADE, GMC.
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My favorite truck!
Jared K., 03/30/2016
2015 GMC Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A)
5 of 5 people found this review helpful
I've driven plenty of trucks - F150, Chevy Avalanche, Silverado...but this one...this one blows them away! Looks amazing. Drives amazing. Technology is amazing. Comfort is amazing. Seriously, I can't say enough good things about this 2015 Sierra SLT Z71. I'm not one for fancy things, but I felt that I deserved a nice car - and this is definitely a nice care. Interior is well appointed with leather trim on the wheel and dashboard; nice wood and aluminum accents throughout the cockpit; user-friendly steering wheel and touchscreen controls; heated AND cooled seats; heated steering wheel for those cold mornings; power seats; and plenty of leg room in the back. Exterior is clean: 22" wheels help you ride a bit higher so you'll have better visibility; chrome accents are eye catching, but modestly appointed; overall...it just looks GOOOOOD. Ride is smooth and isn't "trucky" if that makes sense.
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5.3L 4WD 2DR SHORTBOX Sierria 1500
Joe Donahue, 09/07/2015
2015 GMC Sierra 1500 2dr Regular Cab 4WD SB (4.3L 6cyl 6A)
5 of 5 people found this review helpful
THE HEADLIGHTS ARE DANGEROUS!!! Be extremely careful driving this vehicle at night!!! The way the LOW BEAMS are designed make for a Dangerous Driving Condition!!! The OEM Headlights are NOT ADJUSTABLE!!!! If anyone comes up with a fix or an approved warranty replacement set of Headlights please contact me [contact info removed]. The Hump? Or left foot pad on the Drivers side is something that shall need to be fixed. It's down wright uncomfortable, and I'm thinking a RAZOR BLADE and maybe a 5 Lbs MECHANOCKER Hammer may do the trick. The Owners manual says there should be locking tabs below the (VYNAL?) interior flooring for floor mats. I imagine with the Razor Blade and a set of Heavy Shears I will find out. So, Basically for $34k I've got a new truck that is in need of some Mechanical Surgery. On the Good side though the Sales Team that I bought this vehicle from went above and beyond their duty to obtain this vehicle to sell to me. Great Job Sales Team!
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My 2015 is the best truck I have ever owened.
GMC Cornhusker, 07/31/2016
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
5 of 5 people found this review helpful
Its now been a year I have had my 2015 GMC Sierra. I have put on 11,000 miles and have not had any problems. I have not towed with it yet but my friends with the same year and model say its great towing with it. I would like to see better fuel economy but it is a truck. I average about 16mpg in the city and 19-19.5mpgon the Interstate. (both of those figures are with the truck in 2 wheel drive mode.) I believe that when GM puts their 10 speed transmission on the Sierra (probably 2019 or 2020) it should give it an extra 2 miles to the gallon, or so I've read. The truck handles the snow and Ice great here in Nebraska. I drove through 4 foot drifts once before the plows came through and it handled great.
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Tranny Issues
Scott Peterson, 07/27/2016
2015 GMC Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
11 of 13 people found this review helpful
I bought the truck new, within 5000 miles there were Transmission Issues, they replaced the whole thing with a brand new one, GMC wanted to see it !! within 2000 miles there were the same issues with this one, now a 2nd new transmission, within 3000 miles the tranny was acting up again !!! they wanted to replace it I said NO, I want a different truck 3 months of battling with GMC it cost me 2800.00 more to get a different new truck, I had less than 10,000 miles on a brand new truck !! now with 35,000 miles on my business partners same truck he has just had his transmission replaced and after 2000 miles he needs it replaced again, theres something wrong with the 2015 6 speed transmission, I'm worried now that my new truck with 20,000 miles on it will have more problems shortly, I've been a GMC customer for 30yrs and will continue, but they have issues with this 6 speed transmission, and they will for quite awhile.
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Transmission replaced at 7000 miles
Andre Marrufo, 09/07/2016
updated 09/10/2019
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A)
11 of 13 people found this review helpful
The 8spd transmission in this truck went out at 7000 miles. Had to be in shop 3 different ocassion for them to realize it needed to be replaced. The two previous times they reprogrammed and made me put 500 miles on it before saying it didn't work. GM needs to make it right to all its loyal customers. So hopefully this transmission will not fail. Please do yourself a favor and stay away from these trucks till they fix the issues. After the new transmission I had issues again so I traded it in and lost all my money I had put down on it. This trucks trade in value was not very good. Plus the times it had been in the shop were on record so they couldn't certify it thus less money for trade.
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stay away from this product
jim, 02/10/2019
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
7 of 8 people found this review helpful
Had the truck my first winter, only 5000 miles and the radiator hose was blowing fluid thru out the engine. 26000 miles and the 4 wheel drive was stuck in 4x4, later found out you should not shut engine off in cold weather conditions with the 4 wheel drive in gear. The heater in defrost does not clear the window all across the front window . This product is 100% in Mexico and the quality shows.
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I was going to buy a Suburban...
Al, 11/21/2015
updated 11/26/2018
2015 GMC Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
7 of 8 people found this review helpful
Went to the dealer thinking new Suburban I ended up with a Sierra Denali! Briefly stated, I have had Suburbans for 20+ years to haul materials for my business and personal use i.e. hauling black labs, gear for various outdoor adventures, etc. I actually have used a Suburban for what the vehicle was initially intended! Unfortunately, the new recently redesigned Suburban is an engineering disaster for folks like me. The rear storage area is much smaller and chopped up. Also, if you have to crawl in the back you darn near need a ladder to get in. It's clear that GM has targeting soccer moms for the new Suburban. It's strictly a people hauler...period! So, I just happened to look at a Sierra Denali crew cab pickup. After a test drive, I was ready to buy. The back seat area is roomier than a Suburban and will seat 5 comfortably. I could go on and on, but the bottom line is I love this vehicle. Best of all, it cost far less than a comparably equipped Suburban!
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2015's are a Lemon Law Case waiting to Happen
Pissed Customer, 11/16/2016
2015 GMC Sierra 1500 SLT 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A)
9 of 11 people found this review helpful
Stay away .... Been to the "GM Certified Dealer" shop 8 times since I put 30,000 mi on it. It started a shutter at 30-60mph not this thing shakes and shutters so bad at all speeds. Had two separate transmission repairs... TCM Control replaced twice and transmission flush. Do yourself a huge favor and do not buy a GM Sierra/Silverado 2014+ as they have nothing but horrid transmission issues. Also repaired on my truck was the split bench started shifting side to side. Driver Seat had to be repaired because it swayed back and forth on turns. Headlights are also very poorly engineered. Zero visibility in dark conditions.
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Transmission
Tim Craig, 08/26/2019
2015 GMC Sierra 1500 SLE 4dr Crew Cab 5.8 ft. SB (4.3L 6cyl 6A)
4 of 4 people found this review helpful
Buy a extended warranty if you buy a GMC Transmission out at 123,000 miles...
Looks so good but just so awful
Andrew Morabito, 07/18/2015
updated 01/20/2017
2015 GMC Sierra 1500 Denali 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
21 of 29 people found this review helpful
This is my third 14/15 with the first two being lemons. Well it looks like ill be able to make lemonade pretty soon. The quality of these trucks as awful. My truck has 7000 miles now and is on its second transmission and second rear end. The transmission blew at 6500 miles. The rear end went at 7000 miles. The vibrations from the truck are horrid for a truck that stickers at $62,000. Aside from all the driving issues with the truck, unfortunately the list goes on. The GMC IntellaLink is a joke. It doesn't understand basic Bluetooth commands such as a persons name. It will not understand street names for the nav. Its basically useless. The collision warning is downright dangerous, if you are driving on a slight incline, and it picks up a shadow (like from going under a bridge or something) it activates and tells you are going to crash. Now imagine it that activated the brakes??!!! You would crash or at least be rear ended. On the exterior lets start with the lights, you literally can not see at night and if its raining, forget it you have a better shot of hitting the lottery than seeing what's in front of you. Poor panel fit on the front bumpers expose the locking tabs. The plastic skid plate vibrates when you shut the doors making the truck feel cheap. This review is not to blast GM and is not a rant, its for you the consumer. These trucks are awful to drive. I don't ever look forward to driving this truck having the fear that its going to break down in the back of my mind. This truck has the 8 speed transmission and the 6.2L and its quick but the downside of the transmission and general driveline whiplash and vibrations take away from the fun of having 420HP pretty quick. They make trucks for a nickel now (in Mexico) and have the walnuts to ask you for upwards of $60,000 for the "high end" truck... get out of town GM with this garbage. You should be embarrassed with this product you put out knowing of all the problems. The general public should not be your beta testing group. Last thing I will say to you the consumer, go onto any forum GMC/Chevy and type in "problems" and you will get a 50+ page list of issues. Good Luck After now 27000 miles the truck is undrivable. Gm won't fix the truck. The transmission slips in all gears and the rear end bangs so hard when it shifts it actually activates the traction control. This is by far the worst truck I have ever owned. Gm does nothing to make it right and blames the consumer for being "uneducated" on newer vehicles. I can't tow my snowmobiles with any confidence with this truck. If you use this truck for "truck" things, or any performance at all, this is not the truck for you.
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10,000 Miles and In Love
Randy, 02/10/2016
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
7 of 9 people found this review helpful
Reading all of the reviews made me want to post one. Specifically in response to someone who obviously had a really negative experience with this truck and wanted the warn the consumer. Well I want to do the opposite. I drive a crew cab SLT with the 5.8L V8 4WD as a daily commuter in VT. We get the hot weather and the coldest of the cold. I log a min of 50 miles a day. I'm incredibly pragmatic and evaluated every truck, cost/quality/ride etc... I ended slightly blowing my budget for this selection. It's not a Denali but essentially in name only (and maybe magnetic suspension). Otherwise I have every bell and whistle, 20 Inch luxury rims, folding mirrors, hot/cold seats, premium leather, wide running boards and more. To put it simply this is the best vehicle I've ever owned and don't know that I could ask for more. Now I will admit I'm relatively young, 32, so perhaps the advanced controls come really easy to me, but I find everything to be intuitive. My favorite feature is the ability to call up Siri in 2 seconds and direct her to do my bidding. I've asked for songs to be played that I don't own but it's found on apple radio in 3 seconds. The feature I did shut off almost immediately was the lane departure assist. Either I cross the lines all of the time or the roads here are narrow but my rear end was vibrating worse than a stripper riding the sibian on the Howard Stern channel. Aside from absurd comfort, phenomenal amenities and an awesome look the gas mileage for an engine of this size is nuts. I'm getting an avg. of 20 MPG, my old V6 BMW barely got that but now I can tow a boat if I feel the need. Addressing some common issues I will say that I've noticed the weird shifting at certain speeds. It is disconcerting but it happens very rarely to me. The other concern is the headlights, with everything on I don't have an issue but I can see how it's a bit dim. To be honest slightly shocked it's not a higher quality bulb considering the money put into the headlights on these new rigs. I'll post again if issues arise but I can say that if you can afford it and want a truck, you won't find a more luxurious option. **The folding back seat in the crew cab is game changing. Full size dog bed, tires, golf and even seat down packed with people it works great!
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first GMC
jc, 10/09/2015
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A)
5 of 6 people found this review helpful
I have owned numerous fords over the past 20 years and have always had a problem with them, motor leaking oil, rear end clutches, third brake light leaks water into cab,i can go on and on. this is the first GMC i have owned and really think that GMC has done their homework, i like the style inside and out, the ride is excellent with the 6 inch longer wheelbase or 6.6 bed, tows my 22' bass boat like its not even there, and has interior features you wont find on high end vehicles, purchased it at the end of the year and received some good incentives, warranty is great and comes standard other manufacturers give it to you as a purchasing factor, love the onstar, wifi, and navigation, all of it is very easy to use, right at 2000 miles after three months.
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2015 Sierra Denali - Bougt used 19K miles
john kane, 04/22/2016
updated 10/31/2016
2015 GMC Sierra 1500 Denali 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
5 of 6 people found this review helpful
Love it - ( Of course) - All good except: Engine idles very loud in my opinion. Dealer says it is normal ( really?)- I traded in a 2007 SLE i used to leave running all the time because it was so quiet. Explanation is new technology with fuel injection system - Hate te noise from outside the truck - never hear it from inside. Everything is super, and I am still getting used to it but Navigation is a bear to use - does not understand my voice - easier to use Waiz on my phone. Stereo sounds nice but again a bear to understand. I will review again in six months - only have had 5 weeks. Dealer ok - not great -- got the feeling they wanted to dump this truck ( after I bought it of course).
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Cautiously Pleased
Adam S, 01/15/2019
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
3 of 3 people found this review helpful
I love every aspect of the truck except the transmission and fuel management. I have concerns over the long term reliability of the transmission. The vehicle has the ability to switch between 4 and 8 cylinders to better manage fuel. However, when the truck operates in 4cyclinder mode at low to moderate speed there is a noticeable increase in engine noise and slight vibration. It’s the equivalent of operating a manual transmission in a higher gear while going too slow. Other than that, I love it.
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Good truck, rattles worse than a maraca
Dale Walton, 01/31/2016
updated 02/01/2018
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
12 of 18 people found this review helpful
Ive owned this truck for only 3 months now, and have only put 4300 miles on it. Fuel economy is great, but I cant stand to be driving in it because of so many interior rattles. If somebody on a harley pulls up next to me, or any other vehicle with an aftermarket exhaust it starts with a very high pitched rattle under the dash. If i HIT EVEN THE SLIGHTEST BUMP IN THE ROAD, IT SOUNDS LIKE EVERY SCREW IN THE CAB IS LOOSE. I drive professionally for a living, and refuse to own a rattle bucket for my hour commute home. Wish I would have just kept my 2012 tundra. *****UPDATE 01/31/2018********* I SOLD THAT PIECE OF JUNK!!!!!! After this review, I drove straight into my local Toyota dealer and bought a 2016 Tundra limited, and have not regretted the decision. A much higher quality truck. After owning for 2 years it’s still as tight as the day it was completed in Texas (not Mexico like a GMC).
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One sexy ride
Porter, 03/20/2016
2015 GMC Sierra 1500 SLE 4dr Crew Cab 6.5 ft. SB (4.3L 6cyl 6A)
4 of 5 people found this review helpful
I bought this truck on a whim. Took my Sierra double can in for an oil change on Thursday and bought this one on Friday. I have the fanciest slt z71 2x4 you can get without paying for the Denali name. All the trucks needs is a grill and automatic running boards. First off I never thought I'd see trucks this fancy in my lifetime. The other reason I bought it. It was a left over 15 13k off lower interest rate and lower payment. First looks gmcs are the best looking trucks on the road. I like all the bells and whistles on it except for the 8 way seat I can't seem to get comfortable in it. I know it's crazy but it's almost to much adjustment. I don't care for the ride now that I have driven it for 1500 miles but I'm stuck with it. My wife loves it. And yes the transmission shifts at very weird speeds. And I don't care for it but my last one did the same thing. I haven't hauled anything yet I will update when I put it under a load. Also found a bad spot on the paint job we will see how my dealer handles that. But I can say they have been exemplary so far for 2 years. Sunrise gmc on the pike Memphis Tennessee. They deserve to be mentioned they are the reason I bought a second truck. I have noticed the rattles we will deal with that later my 14 did it also. Now on to the positives. 5.3 plenty of power. Looks well I can't say enough about the looks. Dual climate control love it. Heated seats love it a/c seats love it. Flow through console love it. It has a handy pouch in the center console that holds my full size 1911 pistol very nicely. The leather is very nice. The carpet leaves a little to be desired. And the factory floor mats suck 45k for a truck I expect something better. Now on the feature I can't say enough about. The driving safety system. It's awesome it will make drive the way your supposed to. The collision alarm saved me the other day. The park assit is very nice its my daily driver so I park in a tight lot at work. The back up camera in the 15 blows away the 14 model. The lane departure is nice. Heck it even warns you when take your eyes off the road to long. And it has the Anit tailgater feature very nice. If you rear end someone driving this truck with the system on your an idiot and don't deserve to drive a truck that nice. I bought the iridium metallic and with all the chrome it's a nice looking ride. Everywhere I go I get compliments on how nice it is. If you got the money go for it. My purchase date is incorrect the system wouldn't accept that I bought it in 2016 I bought it on 3-4-16
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The quietest truck out there!
Dan Brown, 04/11/2016
2015 GMC Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
4 of 5 people found this review helpful
The Ram and the F150 trucks are both excellent and worthy choices, but there were three things that clinched the deal in favor of GM's offerings. One is the quiet cabin. In driving all of them, GM has the secrets to making a quiet vehicle. Secondly is OnStar. No one else even comes close to offering you a system that can contact help in case of an accident, directions and as well as keeping watch on the condition and operation of the vehicle. OnStar is a big plus. And the third benefit was being able to have Wifi in the vehicle as you travel. No one else even talks about it except to link it through your cell phone, which is perfectly fine if you are always in urban and perfect cell phone areas. Otherwise you are just out of luck. We use our laptop a great deal as we travel so the Wifi is a huge benefit to us. I have no complains whatsoever except that the headlights are terrible. The dealer has changed the bulbs and that has helped some, but it is surprising, that in a modern truck so well thought out and built, that they could install such poor headlights. Hopefully they will upgrade those soon. Otherwise, I love this truck.
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Great looks, good mileage but poor quality
Marvin Blow, 07/13/2015
2015 GMC Sierra 1500 SLT 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A)
8 of 12 people found this review helpful
I bought this truck new a.m. October 2014. I love the look of the truck and the ride quality is excellent. The infotainment center went out in December 2014 and it took the dealership over a month to get the parts to fix system. Dealership indicated it was a common problem. The heated and cooled seats do not activate with the remote start. Dealer indicated the outside temperature had to be a a certain level. I still can not get the heated and cooled seats to activate even after making sure the settings are correct. At around 11,500 miles, I noticed that the bed of the truck is slightly misaligned with the cab. Grapevine GMC in Grapevine TX refused to honor as a warranty issue. A call to General Motors customer service and the representative indicates the misalignment of the bed of the truck is an alignment issue and the truck is outside of adjustment period. I tried to argue that the alignment period was pertaining to wheel alignment and not to alignment of the truck bed. Decided to get the truck repaired on my own.
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Great look Bad Price
Dustin, 10/06/2015
2015 GMC Sierra 1500 SLE 4dr Double Cab 4WD SB (4.3L 6cyl 6A)
8 of 12 people found this review helpful
Pros: look great, nice mpg, Cons: head lights, can't see anything at night and worse in the rain; head rests, very uncomfortable too far forward; vibration in drive line while driving; no radio reception at all; transmission shifting problems; windshield wipers are worthless; dealer help anymore is bad at best. I'm done with GM
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If you want an OKAY truck this one is for you!
Alen, 12/20/2016
2015 GMC Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
5 of 7 people found this review helpful
I took a week and test drove all the major brand trucks (minus Ford, just not a Ford guy and I regret not test driving one) at the end I ended up purchasing a 2016 GMC Sierra 1500 Denali (5.3l V8 / 8 Speed Transmission). I have personally owned 94 vehicles, sold vehicles at a dealership, was part of a dealership, so I am very familiar with anything automotive. I bought the vehicle in September of 2016, brand new from a dealership in Missouri (I live in Iowa) and I have put 4250 miles on it in the past 3 months that I have owned it. The first 5 days of owning it I realized I have regretted buying it. The first issue was the RUST! well as they call it rail rust/dust, it was on the inside of all the doors where the door meets the body of the vehicle, then I noticed spots everywhere else - I was told all vehicles have this, it's just that mine was the pearl white so it showed more - my thought was if I was paying $50k for a vehicle it should be perfect! (apparently not). Either way I had to have the dealership take it to a local detail shop and they took a clay bar to it (twice since they didn't do a good job the first time the rep says) but it still didn't get all of the rail rust off, decided to live with it - will be trading the truck in 2-3 years even though I bought it to keep "forever". Out of the trucks I drove and compared it to this was the best overall buy for what I was looking for - if I had to do it all over again I would buy a RAM 1500 EcoDiesel Limited (friend week after me bought one for $5k less than what I paid for the Denali). I test drove the Ram 1500, Toyota Tundra, Nissan Titan, and Chevy Silverado. The Sierra in my opinion is FAR better than the Silverado - just go drive both and you will see the difference in ride and overall feel - I figured it would be the same truck, but I was wrong. The Ram 1500 and Nissan Titan had the best features that the others lacked, keyless entry/start being the main thing for me - only the RAM and Titan had keyless entry - Huge Fail on GM and Toyota. The main reason I would purchase a Ram 1500 instead of a Sierra 1500 is the fuel economy - I do about 75% interstate driving and rest city and I am averaging 16.1MPG (that 16.1MPG is based on the last 4250 miles I have on the truck, I am currently with it being cold/snow getting 13.4MPG). Also not to mention when I completely babied it and drove extra economically it showed 18MPG - when I actually calculated (dividing miles by gallons filled up) I got a grand total of 15.9MPG. My friend has the same driving habits and in his Ram 1500 EcoDiesel (6 cylinder diesel) he is averaging 24MPG. I was ideally looking for the 6.2L and not the 5.3L engine, I have driven both - there's a huge power difference, the 5.3L is not powerful enough, not even for daily driving - it constantly feels like it's lacking power. The 8 speed transmission is what I was looking for - but isn't what I expected it to be, 95% of the time the transmission shifts GREAT, but that other 5% of the time when you are going slow and it's shifting between the lower gears it JERKS and shifts WAAAY more than you would expect a brand new top of the line truck to do. Either way, ideally I would love GM to contact me and give me some money back ($10k would be ideal) - this is a $35k-$40k truck in my opinion and not a truck with an MSRP of $60.5k OR JUST BUY IT BACK OFF OF ME (last 6 of VIN - 344961, contact me). Either way here are some pro's and con's: ---Pros: Looks/Styling, OnStar App (start/unlock/lock your vehicle from anywhere, first 5 years free), tailgate design/hydraulics, interior design, Car Play, Towing Mode (very smooth when towing / gauges) ---Cons: Gas mileage is a considerable amount lower than advertised, no keyless entry/start, paint is very poor quality (I even have the $1000 upgraded White Tricoat), the heated seats/heated steering wheel with remote start don't really work, the auto folding mirrors are a joke (all there is is a setting inside the menu screen to enable you to use the button on the door to fold them, what a joke), the truck is under-powered (5.3L - this does not apply to the 6.2L), lack of innovation/features (like the RamBox)
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rip off
miamimama1, 02/04/2016
2015 GMC Sierra 1500 2dr Regular Cab SB (4.3L 6cyl 6A)
11 of 18 people found this review helpful
I just put a huge down payment on my denali 2015 on Jan 7 2016. Two days after having the car it was jerking before and after stop. I almost had numerous accidents in my new car. I went back to brickell motor's and asked them to give me a new car and I was told to leave the car for two weeks so they could check it? Are they crazy. I just purchased a 60k truck and they wanted me to leave it. I called gmc and after a 1 hour phone call I got directed back to the dealer. I went back to Brickell Motor's and was treated like a piece of crap. It wasn't until I threatened to call the media that one of the Managers came out to speak with me. Same story leave the truck. Heck no! I'm not getting a 20 day old car for repairs. Again I called gmc and was told that Marcia Owen and or Pete Bur would be calling me in 24hrs. I'll blog back if this gets resolved. If it doesn't I'm telling you all DO NOT BUY GMC PRODUCTS AND MUCH LESS FROM BRICKELL MOTOR'S IN MIAMI FLORIDA. THEY ARE EAGER TO TAKE YOUR MONEY AND TERRIBLE ON CUSTOMER SERVICE AT ALL LEVELS. THE SAD PART IS THAT GMC IS JUST AS BAD..
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Gorgeous truck.
Adam B, 08/30/2015
updated 08/31/2016
2015 GMC Sierra 1500 SLT 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
2 of 2 people found this review helpful
Drives like a luxury car. Interior is absolutely top notch. The quietest vehicle I have ever owned. Had 2014 Chevy, this is a step up in style and interior materials. Loving it so far. --Had the time truck for a year now. Overall great experience. The shifting from 2nd to 3rd can be sluggish at the wrong time. Probably my only major compliant.
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Tailor Made!
Bruce Northam, 08/16/2016
updated 08/17/2017
2015 GMC Sierra 1500 SLE 4dr Double Cab 4WD SB (4.3L 6cyl 6A)
2 of 2 people found this review helpful
I should start by saying I have the 5.3 V8. It has more than adequate power. The payload exceeds the 2007 I previously owned. Because I have radical lug mud tires, my fuel mileage is only about 16MPG. I expect it will increase when i put street tires and quit hauling heavy loads or pulling a trailer. It has the trailer towing pkg, 4 wheel drive, and I believe it has been lifted, since I can't reach over the bed to access the bottom of my tool box. The BEST I have done is 20MPH but it is avging 16. i am running 275/75/18 tires. It also has the locking differential, a must on a 4x4. The trailer brakes are integrated into the dash, I love that. In fact the only thing it doesn't have is a telescoping steering wheel, but it does have adjustable depth pedals. It is as if I custom ordered the truck, I LOVE IT!! I STILL love it. Switching from the mud tires did increase the MPG. I average about 17 in town and 20 on the highway empty. It has a 4" lift. I've driven it more I love it so much. About 15k instead of 10 over this last year.
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Nice Ride needs a little more refining
Michael, 08/10/2015
2015 GMC Sierra 1500 SLE 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A)
2 of 2 people found this review helpful
I bought this truck in April with 20 miles on the clock. Interior is a major set up from the 04. The touch screen info system takes a little getting use to but is not too complicated. The voice activation software need to be improved, takes several tries before system understands what you want. The setup in the G8 works very well, so GM should have it perfected by now. The WIFI hot spot was ok but not something I would use regular enough to keep. The resolution of the backup camera is good and I like the scaling on the display, keeps things in perspective. The ride is a little on the bouncy side and road noise is minimal. I have the 5.3L engine with trailering package. Power is good but transmission seems slow to shift when in town driving around 30mph. Have not had any service or equipment issues, only 4XXX miles mostly highway miles. My only true peeve is getting in. I did not get the step or rail so even with my 6'.2" frame I have to climb in but getting out is a breeze.
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"GET A TUNDRA CREW CAB PLATINUM"
Mr. Tundra, 03/22/2017
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
2 of 2 people found this review helpful
At first glance truck really grabs your attention ! Then you buy one "MISTAKE" headlight's blew out at 10,000 miles , 16,000 running boards had to replaced peeling like a sunburn , now at 17,000 miles front bumper is loose slid at little to the right inside bolt poked out a dent , chrome on emblems is peeling I can say I never had a problem with dealership "WHY" because they look at truck and say no problem we will replace the defected parts sounds great but what a inconvenience to keep returning to dealership it's been one year with the vehicle once all is fixed time to get a trade in value and go back to Tundra !
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Bummed out
Ricco, 06/09/2017
2015 GMC Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
2 of 2 people found this review helpful
I am taking my truck which has just over 23k miles back to the shop for the 6th time since 4-24-17. Engine light on every time. Lifters collapsed, stuck, etc. The last time which was this week they said GM finally admitted the piston head was a poor casting and so they put a new one on. I think I put less than 60 miles on it and its running poor again and engine light is on. This is VERY frustrating to say the least.
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Love the truck but quickly very disappointed
Ron Gierchak, 09/10/2015
updated 09/14/2020
2015 GMC Sierra 1500 4dr Double Cab SB (4.3L 6cyl 6A)
2 of 2 people found this review helpful
Got my truck in April '15 and loved it - until it got hot outside. I've had two F-150's and a/c would freeze you out. Here in Alabma summer's are very hot. A/C blows hard and very cold, briefly. Then the A/C cooling stops while the hard blowing continues. And since we have such hot summers it feels like hot air blowing on you. It does this back and forth continually. Of course once the truck cools off enough then it not so bad. But it's a good 10 minutes- long enough to start sweating! It's as if the compressor switches off and on while the blowing remains the same. Dealer kept it two days and said it was working normally. I work indoors in an extremely cold business and am a slim guy so when I leave work I'm not overly hot so sweating my rear off on my drive home is unacceptable. Im wondering if the dealers hear this a lot and know it's baked into the design. Either way I will be trading it near years end when prices drop on 2015's. In the deep south with our long, hot summers and high humidity good A/C is critical. UPDATE: A/C still sucks. Truck has always had a vibration at HWY speeds which I attributed to the original tires. Finally after 2 and 1/2 years I needed new tires. Got a set rated the best for All Season/ HWY for my size and truck still vibrates at HWY speeds causing the change in the center console to clink! I will definitely be getting an F-150 when my lease is finished in July 2018. The A/C issue is a real deal breaker for me living in the Deep South.
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SLE/SLT REVIEW w/ V6-V8 compare
Andrew, 03/01/2016
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
2 of 2 people found this review helpful
What you need to know from someone who know cars and trucks. I've driven both the SLE & SLT models in the crew cab both in the V6 and the V8. The issues right off the bat for myself (someone who probably won't tow more than 5,000 lbs) is that the V8 (5.3L) can tow more, has more HP, and torque and WILL have better resale. Really quick on the V6, the power, responsiveness, torque and capacity was more than capable of satisfying most buyers. Onto the truck I purchased, the 2015 GMC Sierra V8 SLT short bed. I absolutely love this truck. From the power, torque, comfort, to how absolutely quiet the ride is... I'm absolutely impressed. I'm 28, a homeowner and a homeowner. In my few years on this planet I've owned 9 cars; SUV's, sports cars, trucks, and finally the GMC. My dad is a huge proponent of Toyota and so am I but this truck is a cut above the rest. INTERIOR The interior is absolutely amazing. In both SLE and SLT models you get the stitches dash and steering wheel which is both stylish, and sleek. I could do without the ugly silver accents surrounding the 8" touch screen but I can survive. Both the bench and bucket seats have their benefits. I love the bench but the middle seat is hard (due to the compartment underneath) but oh can still seat 6 people... but when will that really happen? and it's not comfortable. The bucket seats are amazing, in my SLT model I have power seats and leather and so far after 4,000 miles they have held up well. The electronics and capability of the truck are outstanding and expensive but amazing. The lighting in the vehicle is almost spot lighting and recessed so the light will not bother the driver when turned on... and it looks amazing when it's dark. EXTERIOR The truck looks better than most any other truck on the road. This truck has a smooth suspension and on mine and I have a Z71 and the ride is amazing, smooth, classy and responsive. The tailgate lowers slowly and has bumper steps which are nice. I love the four door look, the bed, and it's just all around sexy. Overall - the truck is great... MPG is industry leading for a Crew Cab V8. I average 20ish on the freeway at 80 and 17 in the city with my moderately heavy foot. I want this truck to start coming pre leveled instead of having to buy a 1.5" leveling kit. The truck also deserves better reliability ratings similar to Toyota... I'm hoping they figured it out and in 7 years I can still say my truck is perfect!
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Terrible
A, 10/17/2022
2015 GMC Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A)
2 of 2 people found this review helpful
Beautiful truck but I’ve put 2 transmissions in at 4000$+ a pop, at under 220 000 km. Torque converter went both times. Same with a couple others than I know. Not Impressed with the re-man from gm as it only lasted 70 000km after the dealer swapped it.
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Bad paint job
Wynona Hurlbut, 07/16/2021
2015 GMC Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A)
2 of 2 people found this review helpful
My 2015 GMC sierras paint is bubbling and peeling off and I guess a 6 yr old 40,000 dollar rig is not no big deal, Well I will get rid of this pick-up and never will I own another Chevy or GMC.
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Problem after problem
Travis, 04/27/2019
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 6.5 ft. SB (5.3L 8cyl 6A)
2 of 2 people found this review helpful
Didn’t have my exact model as an option on here as I have the 6.2 liter with a horrible 8 speed transmission. Truck shifts so horribly at low speeds it’s been into the shop a bunch, I mean a bunch of times. It can’t decide what gears it wants and then will shift so hard it startles you, even can chirp the tires if you giving it any throttle. Replaced transmission at about 25,000 miles, still did it. Replaced valve body a couple times, still does it. Tried about everything but can’t fix it. Injectors went out at a low mileage, around 50.000, and by the way apparently your motor can run without those because they weren’t covered under the power train warranty. Our Yukon also has the injectors replaced at a low mileage. Radiator also had to be replaced at a low mileage. AC just went out at 60.000 miles, bad condenser which by the way we also replaced in our Yukon at about the same mileage. Faulty parts obviously. Been a GM guy for the last 20 years but have been fed up with the latest quality. Stay away unless you like repairs. This truck should be bought back from me via Lemon law but no luck yet.
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Looks good but thats all
Rep. Hunter, 05/13/2016
2015 GMC Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
2 of 2 people found this review helpful
$65,000 for a designed 2015 Sierra Denali with 6.2L engine is should hold up longer than 10 months. From day 1 I have told the dealer that something was wrong with the transmission. It does not shift smooth at speed 36/37 and 46/47 mph. It was taken in 3 times and was only programmed once and the problem kept getting worse. Dealer tells me that I should not be pulling trailers with this truck but they talked me into the 6.2L engine because they knew what I had (boat, dump trailer and small tractor which is not pulled regularly). I put in reverse one day and the rear end sounded like it was about to fall out. Driving in first and second gear sounded like metal scrubing. Took to dealer and told them I did not want it back until it was fixed. They finally said I needed a transmission. Duh I told you that a month after it was purchased. After the transmission was installed, it still does not shift smooth; I still hear a whining sound like something is not grounded. If finally took it to another dealer to trade in for a GMC 2500 HD and they said trade in is only $41K. Value dropped $24K in less than a year. WOW. Pros: Looks Good; great take off speed; looks good; entertainment good; looks good; rides good; looks good; good gas mileage; looks good Cons: Transmission sucks (replaced less than 10 months old); parking assist fixed 3 times; whining sound; hard to see over hood; price; resale value
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Don't drive at night
Jim, 12/19/2015
2015 GMC Sierra 1500 SLE 4dr Double Cab 4WD SB (4.3L 6cyl 6A)
3 of 4 people found this review helpful
Headlights suck. Chime is too loud and can't adjust. For a MSRP of 36K for a base model, I am kicking myself. No power mirrors or door locks even! $36, 000 and no power side mirrors or locks? Really? No Blue tooth. Literally hate driving at night because the headlights are so bad. Dealer said, they are aware, there is a TSB, but no new light bulbs. Only one bulb for Hi/Lo beams. Just.....what a rip off and shame on me for doing it. Kudos' GMC, no wonder you had record sales figures!
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Very low build quaity
Eduard, 09/11/2017
2015 GMC Sierra 1500 2dr Regular Cab LB (4.3L 6cyl 6A)
3 of 4 people found this review helpful
I've purchased my Sierra 1500 brand new from GMC dealer. There are a list of issues that started at the day one or shortly after the day one. It is excessive vibration at the highway speed, very poor headlights, issues with rear suspension etc. I had my truck at the dealer repair shop for 92 days during the first year and it still needs more repairs! Very surprised with this GMC truck low build quality.
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It's getting HOT and the AC does not work
Tom M, 05/12/2017
updated 11/21/2019
2015 GMC Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 6A)
3 of 5 people found this review helpful
Two year old expensive vehicle and the AC condenser has a leak. There is a nationwide back order on this part with no availability in site. I have called six dealers and checked the aftermarket sites with no success. In fact the dealers are telling me they have multiple vehicles in their lots waiting for this part. It seems to be a chronic problem of epidemic proportions something needs to be done. Who else shares my pain? Fast forward 5/18; Finally obtained and completed repair to AC condensor 8/17. Cost me over a grand. My next truck will not be a GMC. Things happen we all know that, but it was the way GMC responded and would not take ownership of a chronic problem with their product that causes me to look elswhere next time. Multiple recalls for safety; Will not purchase a GMC again
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already in for repair after a few weeks new 2015
johnnywest64, 12/31/2014
updated 07/03/2018
2015 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
12 of 32 people found this review helpful
there have bee so many things wrong with this truck to list.
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know what you are buying so you can be happy.
Gordon Smith, 09/20/2016
2015 GMC Sierra 1500 SLT 4dr Double Cab 4WD SB (5.3L 8cyl 6A)
2 of 4 people found this review helpful
You need to know up front that this vehicle is not a really great trim nor exquisite interior. However, it is a workhorse. It will do anything for you that a pickup truck is supposed to do. If what you want is a very reliable truck without all of the glitter, and at a better price,this is the truck for you.
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Bose sounds lousey. N.V.H. horrible in some roads
Hankinator, 11/26/2015
2015 GMC Sierra 1500 SLT 4dr Double Cab SB (5.3L 8cyl 6A)
1 of 1 people found this review helpful
Bose system is a huge disappointment! They actually made the sound quality worse, I'm guessing so that crappy XM sound matches the FM sound. The bass is either weak or super boomy. The highs are limited I believe as above so that you don't notice how bad XM Serius is. On smooth asphalt the truck is fine. When on imperfect paved roads there is an annoying resonance in the suspension. This is in real on an otherwise great vehicle in this day and age.
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Get MORE than you pay for.
Cheri Stolz, 07/22/2017
updated 01/25/2018
2015 GMC Sierra 1500 Denali 4dr Crew Cab 5.8 ft. SB (5.3L 8cyl 6A)
1 of 1 people found this review helpful
This truck is a dream. Comfort and ride of a cadillac with the power, handling and driveability that will make you want to go on a road trip. My tall children and elderly parents are comfortable in the back seat. I literally have nothing bad to say about this truck. I love it.
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Awesome truck
Me, 06/24/2021
2015 GMC Sierra 1500 SLE 4dr Crew Cab 4WD 6.5 ft. SB (4.3L 6cyl 6A)
1 of 1 people found this review helpful
This thing hauls my boat or camper with plenty of torque to spare. 4wd is smooth and really climbs. Beautiful interior and body style
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Poorly made.. My first GM pick-up and my last
Rob , 06/05/2021
2015 GMC Sierra 1500 Denali 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 6A)
1 of 1 people found this review helpful
Made cheap.. wouldn't recommend this vehicle.. first at 40k miles my shocks magneride blow out GM wouldn't replace them.. 2nd my A/C blow up at 50k .. 70k my transmission started making noise.. at 90k my high pressure fuel pump starting to go out. It's like driving an bomb . I wouldn't recommend GM..
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worst GMC I ever owned
w.Vuilleumier, 05/04/2020
2015 GMC Sierra 1500 Denali 4dr Crew Cab 6.5 ft. SB (5.3L 8cyl 6A)
1 of 1 people found this review helpful
@ 55000 miles I have replaced the starter, 3 condensers , oil cooler radiator , vacuum pump,@ 100,00 rebuilt transmission , and the GPS tells me I am in the North Atlantic, now being a retired Merchant Marine Captain I'm pretty sure I'm not in the North Atlantic. I have owned GM products since 1966 and this is my last, and oh yes when I went to replace rear brake pads the emerency shoes where not installed correctly
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2015 GMC Sierra review
Andrew, 07/29/2018
2015 GMC Sierra 1500 SLE 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A)
1 of 1 people found this review helpful
If your looking for a good daily driver pickup this one is fairly comfortable to ride in and handles good in different conditions. The fuel economy isn’t too bad. The manufacturer says 17-22 but I think they are on the high side. I saw around 16 mpg with mine, maybe 18 or 19 highway. I wouldn’t recommend it if your looking to tow anything heavy or plow . The 6 speed tranny isn’t made for it in my opinion. Maybe the 8 speed and 6.2 liter engine would be better suited for that.
- Safety
- Technology
- Performance
- Interior
- Comfort
- Reliability
- Value