Used 2008 GMC Sierra 1500 Extended Cab Consumer Reviews
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Lifters at 86k miles
Bill S., 08/04/2015
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 6.5 ft. SB (5.3L 8cyl 4A)
18 of 19 people found this review helpful
I have had numerous issues with this vehicle from speakers going out (new speakers and radio $600), pressure switch going bad twice ($789 each time), side molding falling off 6-8 times under warranty and now falling off out of warranty (have not fixed), door latches breaking driver and tailgate ($200 for each), catalytic converters needing replaced at 65,000 miles ($1500), and now I have collapsed lifters costing me thousands of dollars. The truck looks good other than it now needs major engine repair. Full synthetic oil changes every 3000-4000 miles, light hauling never beyond capacity, all maintenance kept up and serviced regularly never raced or beat on and I am the original owner. I am very disappointed in this vehicle and will never purchase another GM product again. I should not have issues like this until 200,000 miles or more are showing on that odometer with correct maintenance. I have put way too much money and time into this vehicle, cost of ownership outweighs the worth of this vehicle.
- Safety
- Technology
- Performance
- Interior
- Comfort
- Reliability
- Value
2008 GMC 1500
medic979 , 12/25/2008
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 5.8 ft. SB (5.3L 8cyl 4A)
5 of 5 people found this review helpful
Nice truck. However, the transmission shifts hard and catches when leaving from complete stop. Dealer says they have had other customers with same problem and no fix for it, so very disappointed. Was in shop at 2000 miles with this problem and still does it. I looked at Fords and Toyota, quality was better. Why did I buy GM? I liked my selling dealer. I'm stuck with this truck that has a catch when leaving from a complete stop. Think twice before purchasing. I do enjoy the truck and if they find a fix for it I'll be happy, but they may be bankrupt first. Till they get their act together, go with Toyota.
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Best One Yet
Best One Yet, 12/31/2007
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 6.5 ft. SB (5.3L 8cyl 4A)
7 of 8 people found this review helpful
After driving GMC trucks since 1974 this new 2008 Sierra is the best one yet. The interior is outstanding with great back support in the bucket seats; easy accesss to everything on the dash; to great controls on the steering whell. This is the first time for GMC to have cruise control on the steering wheel and it is much easier to operate. Performance is outstanding with the 5.3 engine and my gas mileage is good as well. With the 4-6-8 engine I get 24 to 25 mile to the gallon at 55 mph. Amazing! My friends drive Fords and Dodges and their milage is so bad 10-12 mile per gallon. Too bad they didn't buy a GMC. My company truck is a Ford 4x4 and on a good day it gets 12-13. Really sad.
worst truck i have ever owned.
trucksucks1, 03/14/2014
2008 GMC Sierra 1500 SL 4dr Extended Cab 6.5 ft. SB (4.8L 8cyl 4A)
5 of 6 people found this review helpful
Truck has 34000 miles on it. Main turn signal switch went out, Door lock switch out, Airbag sensor out, Master window switch out ($400) for a switch! Truck now will not engage the starter, so it's in the shop again. Do not buy any GMC or Chevy truck! Going back to Dodge.
08 Sierra 1500
blurry25, 04/19/2008
2008 GMC Sierra 1500 SLE1 4dr Extended Cab 4WD 6.5 ft. SB (4.8L 8cyl 4A)
3 of 3 people found this review helpful
Coming from a Honda Civic the Sierra 1500 feels like a monster. What a dream to drive. I actually enjoy driving to work now. One of the first things I noticed was how quiet the ride is. With the windows up road noise is virtually none existent. I've been getting around 16.6mpg with all around driving. I suspect that will go up as the motor breaks in, but hey if you're looking for fuel economy buy a prius and just hope that someone in a 1500 doesn't hit you. I highly recommend getting the remote start option. I always start the truck a few minutes before I leave and it either turns on the heater or AC depending on the inside temp of the truck. Nothing like hoping into the perfect climate.
Best of the Breed
sknabt, 01/05/2008
2008 GMC Sierra 1500 SLT 4dr Extended Cab 4WD 6.5 ft. SB (5.3L 8cyl 4A)
2 of 2 people found this review helpful
I decided to replace my SUV with a full-size truck. Choice came down to an '08 Sierra SLT vs. an '07 Tundra Limited ('08 Tundra priced way out of my budget) because I've always bought Japanese. Tundra has nice powertrain but falls short in every other category, especially it's bloated price. GMC SLT's greatest selling point is its luxury grade interior. Tundra is very weak here. GMC's shift at any speed automatic 4x4 is far better than Tundra's crude hi/lo 4x4. GMC has better crash test scores than the Tundra. This is the 1st full-size truck I've ever owned but driving it is actually a joy. Parking is a learning experience but the parking assist makes it doable even for a newbie like myself.
Amazing truck
boostedz06, 11/17/2011
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 6.5 ft. SB (5.3L 8cyl 4A)
4 of 6 people found this review helpful
I had been searching for a truck for a while and finally settled on this one. Picked up a used 2008 with 32000 miles and ive had it for over a month and absolutely love it. It rides sooooo smooth like a caddy and gas mileage is pretty good. Highway at 65mph is 23mpg. Toyota can't touch that. I have the 5.3. Haven't had it long enough to say how the reliability is, but i know from experience these 'Chevys' are so tough. I have the HD tow package and rear locking diff and it pulls my 20' Cobia like its not even back there... Interior is nice and tight. No rattles, no quirkiness. No engine rattle or cam bump. Sounds As if the motor is not even running. Truck is just pure quality!
Great GMC
frtlinr, 11/17/2008
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 4WD 5.8 ft. SB (5.3L 8cyl 4A)
1 of 1 people found this review helpful
I sold a 95 3/4 ton and bought this 1500 series Sierra. I was somewhat concerned about this 1/2 ton pulling my 16ft trailer and, compact farm tractor. Wow, I am so very pleased with the way the Sierra handles this task. This truck has been impressive in every way.
So Far So Good?!
nickdapit, 02/28/2009
2008 GMC Sierra 1500 SLE1 4dr Extended Cab 5.8 ft. SB (4.8L 8cyl 4A)
1 of 1 people found this review helpful
I moved up from a 96 Chevy S10 to a 2008 Sierra, and like the title says so far so good?! I am impressed with the ride and overall appeal of the truck. I had a spray-on bedliner installed and the truck has no problem getting any big job done.
Glad to be Back
Mike, 01/02/2008
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 4WD 5.8 ft. SB (5.3L 8cyl 4A)
1 of 1 people found this review helpful
I traded in my 02 Dodge about 1500 miles ago and I could not be happier. The truck performs great and will haul the snowmobile trailer much better than the Ram did. I am averaging roughly 15mpg which is 3mpg better than the Dodge.
GMC all the way !
xmillsx, 12/05/2009
2008 GMC Sierra 1500 SLT 4dr Extended Cab 4WD 6.5 ft. SB (5.3L 8cyl 4A)
1 of 1 people found this review helpful
I traded my 2001 GMC 1/2 ton 2WD with 195K miles (it still was strong as heck)for this truck and love it. I have always had good luck and good service from GM trucks. I bought this one with only 25K miles on it. The 8cyl to 4cyl fuel management was a little awkward at first but it is systematic now. On the open interstate at 75mph I have averaged 18mpg+. I was surprised. I have towed a 27ft camper with it with ease. The seating is comfortable even on long drives. Two thumbs up !
GMC Lemon
First & Last GMC, 04/01/2008
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 5.8 ft. SB (5.3L 8cyl 4A)
1 of 1 people found this review helpful
First & last GMC truck(2008 SLE 4- Wheel Drive, 5.3 engine). I just traded this truck with 1900 miles on it. The truck had vibrations in the front and passenger door. 3 trips and 14 days in the dealership did not solve the problem. My personal mechanic said the problem was in the powertrain. I gave up and took a loss. I told this story to General Motors and have not even had a reply! Fool Me Once!
GMC should change there initials...
jojo123, 09/28/2009
2008 GMC Sierra 1500 SL 4dr Extended Cab 6.5 ft. SB (4.8L 8cyl 4A)
1 of 2 people found this review helpful
To JUNK!!!! Too many problems with check engine light coming on constantly. For some reason, the gas cap constantly comes loose. GM should provide better stock tires. Had a flat from a piece of limestone gravel. Dealer told me I should drive on better roads! (It's a truck, isn't it?) Should have stayed with Ford. Big mistake to buy this truck. Dealer isn't interested in helping very often. It takes multiple visits to fix one problem. Maybe if the service manager got off his lazy [violative content deleted] of his chair, it could be fixed. Last GM product EVER!
My fifth GMC
Mick, 06/23/2008
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 5.8 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
This truck drives great! I have an 03 Yukon that gets about the same mileage without cutting 4 cylinders off so that doesn't seem to be worth much. It has developed a squeak in the front end the past few days like a dry ball joint but the dealership isn't open on the weekend so I will get it there Monday, pretty annoying for a truck with 3000 miles. I have always loved GMC'S so I love this one too, it looks great and other than the squeak has been great. There is a lot of air noise from the doors that is annoying with the radio off. There are plenty of power ports for devices in the front and back and even one in the console!
You're missing out...
DirtyD, 07/29/2008
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 6.5 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
I test drove every make of truck and this one got my money. Sharp truck and a real headturner with my Black Z-71. Power is great and off road ability is only topped by a Wrangler (I'm an avid Jeeper). Can't say enough about the ride comfort and quiet demeanor, very nice interior. I was looking for a truck, not a Prius or Cadillac. This is the perfect truck.
Great Truck !
bigsky, 08/20/2008
2008 GMC Sierra 1500 SLT 4dr Extended Cab 6.5 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
GM hit it out of the park on this one! I bought the SLT with All Terrain package and it's a great combination. Drive the Tundra then buy the GMC.
Best truck on the market...Period
hound, 09/02/2008
2008 GMC Sierra 1500 SLT 4dr Extended Cab 8 ft. LB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
Gas mleage is remarkable for a large truck with the 5.3 l engine. I typically average 18.9 combined driving and 20.2 on long interstate trips and have measured it numerous times. I test drove all the trucks on the market and this is hands down he best on the market. The quietness, comfort, handling, audio system is just simply the best on the market.
Disappointed
Darryl , 11/01/2008
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 4WD 5.8 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
I have loved Chevrolets and GMCs for 30 years. My 03 Chevy Silverado was the best truck I have ever had. The 08 GMC has been the most disappointing truck I have ever purchased. I am constantly getting alarms that include: Park assist off, air bag, low tires when they are not. On top of the alarms that the dealer cannot fix I have had two interior fans replaced and they are rattling again. The motor is tapping even though I do the recommended everything. The ABS brakes act like I am on ice on dry road. Cheaper braking system. Already have warped discs. My o3 brakes went 144K miles. The sun visors are not wide enough to block the sun. Cannot handle the same trailer as the 03.
2008 GMC SLT Z71 Ext Cab 6.5 bed # 2
schodackbassman, 12/09/2008
2008 GMC Sierra 1500 SLT 4dr Extended Cab 6.5 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
This is my 4th GMC extended cab and my 2nd z71 SLT. Trade my 04 for the 08 because of the great deals over the summer. I loved my 04 but the 08 is hands down a better overall truck. Adjustable everything for the driver including gas/brake pedal. Heated seats, great sound system, upgraded leather seats overall nicer inside. Like the return of drum brakes in the back and nice wheels. EZ lift tailgate is a godsend. Can be open/closed with one hand. Better heater then the 04 but still slow to warm in stop/go traffic on cold mornings below 20 degrees. Remote start is great, ride is great, looks are good, & no more touchy ABS system. 17" Wrangle ATS much better than cheap Bridgestones.
Still not sold on vehicle
north star, 03/29/2009
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 4WD 6.5 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
Bought pickup through GM Employee Pricing sale and got very good deal. Not quite sure about pickup, as you can feel the 4 and 8 cylinder activating and de-activating. I have experienced the tranny jerk from a complete stop as well. After changing oil I can smell oil in the cabin for at least the first 1,500 miles before going away, cannot find any leaks anywhere.
Excellent Truck
Bryan2008, 01/14/2008
2008 GMC Sierra 1500 SLE1 4dr Extended Cab 8 ft. LB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
GMC really did a great job with this truck. I really love the power of the engine and the comfort. I do not drive it much trying to keep those miles off of it. But when I do it is a treat and makes me appreciate life more. It definitely is deserving of much kudos. Thanks again GMC for a really great vehicle.
Great truck
robert trapp, 02/17/2008
2008 GMC Sierra 1500 SLE1 4dr Extended Cab 8 ft. LB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
Have driven GMC trucks for several decades, this is quite possibly the best I have ever owned. Quiet ride, strong frame, good power and torque, no cheap interior like Toyota. Best looking truck on the market. I drive over railroad tracks every day, completely unnoticeable in this truck. Love the OnStar and XM radio features. Lots of interior room as I am a large person, yet fit comfortably inside
2008 Sierra 1500
K. Hays, 10/11/2007
2008 GMC Sierra 1500 SLT 4dr Extended Cab 4WD 6.5 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
I have owned this truck for three weeks. This is my first truck and am loving it. We chose the Sierra over the Tundra. Both trucks are very quiet with smooth car-like ride and handling. Sierra got the nod because of ease of access and interior design. So far, I have averaged 16 mpg in non-freeway driving.
Built to last
Big Lek, 10/18/2007
2008 GMC Sierra 1500 Work Truck 4dr Extended Cab 4WD 8 ft. LB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
I never owned a GMC. Everyone i talked to said GMC was just a high priced Chevrolet, now i know the diference. The styling, the ride quality, and low cabin noise are just a couple things that i noticed that were a lot diferent. I also like the fact that this truck is almost all US made. This truck is great.
I love this truck
goblue16, 03/13/2008
2008 GMC Sierra 1500 SLE1 4dr Extended Cab 4WD 6.5 ft. SB (4.8L 8cyl 4A)
0 of 0 people found this review helpful
The truck is solid and fun to drive. I went from a Dodge Dakota which I loved, but this is a real truck compared to the 1995 Dakota. Very rugged looking interior that should look good for years. The handling is excellent and it takes train tracks much better then any other vehicle I have been in. I have 1600 miles on it and have not one issue with the truck to date. I have received several compliments about my truck and I love teh new Stealth Gray color that I chose. The 170 degrees that the back doors open is extremely handy. Mileage is a little dissappointing to date at 15.1, but that is with only winter weather.
I love this truck
Love this truck, 03/20/2008
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 4WD 6.5 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
I have had this truck for 2,000 miles and about 6 weeks with no problems at all. The truck is solid and fun to drive. I love the exterior design. It looks rugged. I replaced my 1995 Dodge Dakota to get a real truck. I am extremely happy with my decision.
My first Pickup
Bill, 03/23/2008
2008 GMC Sierra 1500 SLE2 4dr Extended Cab 6.5 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
Been driving 47 yrs and always wanted a pickup. Am I glad I got the GMC Sierra! Very good gas mileage with the 5.3 L 4/8cyl. Ave ~17-18 local and 21-23 highway. No significant complaints. Great comfort and handing.
Super Sierra
2008Sierra, 11/14/2017
2008 GMC Sierra 1500 SLT 4dr Extended Cab 4WD 6.5 ft. SB (5.3L 8cyl 4A)
0 of 0 people found this review helpful
The body of this truck has held up amazingly, but be sure to look for those typical rust spots when purchasing a used GM vehicle. A good spot to look is on the rockers, inner rear fenders, underside of hood, front body framing under hood, and underside of the doors
- Safety
- Performance
- Interior
- Comfort
- Reliability
- Value
Worth every penny!!
joe, 10/23/2009
2008 GMC Sierra 1500 Work Truck 4dr Extended Cab 6.5 ft. SB (4.3L 6cyl 4A)
0 of 1 people found this review helpful
First truck i have ever owned and it's everything i expected. Have owned 4wd suv's in the past and this truck has out performed them in winter by far. I take the truck for every family function and vacations , even over my wife's car.
simply the best
the truth !, 01/25/2010
2008 GMC Sierra 1500 Work Truck 4dr Extended Cab 6.5 ft. SB (4.3L 6cyl 4A)
0 of 1 people found this review helpful
gmc has a winner, hands down best all around truck made ! dodge has many issues, nissans are cheap,toyota overpriced and fords are big and bulky ! know people that own these trucks and they all say i never complain about any problems ! i am a gmc guy for life know ! test drive one and it will sale itself !