2008 GMC Sierra 2500HD Consumer Reviews
Recent Consumer Reviews
(20 Total Reviews)
Needs Help
Overall Rating
| Performance: | 2 | Fun-to-Drive: | 5 | Build Quality: | 1 |
| Comfort: | 9 | Interior Design: | 8 | Reliability: | 1 |
| Fuel Economy: | 4 | Exterior Design: | 9 | ||
Vehicle
2008 GMC Sierra 2500HD SLE2 4dr Crew Cab 4WD SB (6.0L 8cyl 6A)
Review
Before buying this truck I owned a F250 V10. This truck was supposed to have 50 more hp and comparable torque but its lack of power is remarkable. My mpg is ok until I hook something behind it then its 5mpg... I have had no less than 20 warranty claims in 1 year. It absolutly can not handle any hitch weight without bottoming out. The sheet metal used to form the body is so thin the smallest bump and you have a dent. I really had high hopes that GM had a great truck but after the trans went out @ 6500 miles and many many other issues I'll admit I was wrong.. This pickup is fine for pulling your boat or cruising around but if you want a HD pickup do not buy this one.
Favorite Features
Comfort is good, ride is good, and milage is acceptable
Suggested Improvements
Build a pickup worthy of the HD that doesn't need to be in the shop once a month
0 out 6 people found this review helpful
Not a fan
Overall Rating
| Performance: | 9 | Fun-to-Drive: | 6 | Build Quality: | 3 |
| Comfort: | 8 | Interior Design: | 8 | Reliability: | 3 |
| Fuel Economy: | 3 | Exterior Design: | 8 | ||
Vehicle
2008 GMC Sierra 2500HD SLE1 4dr Extended Cab 4WD LB (6.0L 8cyl 6A)
Review
The fuel economy of this truck leaves a lot to be desired. My truck is GPS'd so I am only able to drive the speed limit without getting in trouble. The best I have ever got for fuel economy is 14.8 mpg (imperial gallons). The quality of the truck is less than desirable. In cold weather (less than -20c) the back doors will not latch completely without slamming them hard. I actually knocked the molding off the door trying to get it latched. When the doors are closed they squeak and rattle so bad you have to turn the radio up. I have had to install a second battery to get the truck to start after sitting for more than 3 days. The airbag computer already stopped working and needed replacing.
Favorite Features
The interior ergonomics is nice. I really like the self dimming mirrors. Seats are what is expected from GMC (very comfortable). Sounds good at the exhaust pipe.
Suggested Improvements
Fuel economy would be nice. Quality need to be built into this truck. How about a rear bumper that actually takes a hit and doesn't fold like a cheap lawn chair.
4 out 4 people found this review helpful
15 months later, still a great truck
Overall Rating
| Performance: | 8 | Fun-to-Drive: | 10 | Build Quality: | 10 |
| Comfort: | 10 | Interior Design: | 9 | Reliability: | 10 |
| Fuel Economy: | 5 | Exterior Design: | 9 | ||
Vehicle
2008 GMC Sierra 2500HD SLE1 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
Review
This is definitely a Cowboy Cadillac. Performance wise, the gas V8 has all the power you'd need and tows my 7K # trailer with ease. The tranny shifts smooth but as another reviewer said, make sure you get the TCM flash for better kickdown response. The 2500HD 'pure pick up' interior on the SLE not only looks great, it's durable and functional as well. The front seats are great for long road trips. I'm getting about 12 mpg around town and up to 17.5 mpg highway at speeds up to 65. Above that, it nosedives into the 12-14 range. Overall, I'm completely happy with my truck after 15 months. I've had no problems and plan to keep this for a long time.
Favorite Features
Interior comfort. V8 power and nice exhaust sound. Build quality inside and out. Looks great. Tons of storage room in cab. Can tow just about anything with ease. Smooth transmission. Great value!
Suggested Improvements
Seat fabric attracts lint and dirt. A more HD-type fabric would be preferred.
1 out 1 people found this review helpful
2nd Diesel, I'm keeping this one
Overall Rating
| Performance: | 9 | Fun-to-Drive: | 9 | Build Quality: | 10 |
| Comfort: | 10 | Interior Design: | 10 | Reliability: | 10 |
| Fuel Economy: | 5 | Exterior Design: | 10 | ||
Vehicle
2008 GMC Sierra 2500HD SLE2 4dr Crew Cab 4WD LB (6.0L 8cyl 6A)
Review
This is the 6.6L with the Duramax/Allison combination, not the 6.0L. I previously had an 05' with similar features but wasn't worth the buyout at the end of the lease. There are things I liked about the 05 that the 08 lacks but most of all, I'm very pleased with the truck. Towing is great. Crewcab 8' bed is a long truck though. Park it at home if you intend to go into a city.
Favorite Features
Towing and hauling capabilities, large front grille, comfortable leather seats, heated back and seat pads, 6 speed Allison, 33 gallon tank for long trips (MA to NC on a full tank!), OnStar, XM radio and steering wheel controls
Suggested Improvements
Lacks armrest in the seats. Fuel mileage should be better. REGEN drinks the fuel down fast. These bumpers are very thin! Power mirrors and the paint needs improvement
1 out 1 people found this review helpful
Back to re-review after 6 months
Overall Rating
| Performance: | 10 | Fun-to-Drive: | 10 | Build Quality: | 10 |
| Comfort: | 9 | Interior Design: | 9 | Reliability: | 10 |
| Fuel Economy: | 10 | Exterior Design: | 8 | ||
Vehicle
2008 GMC Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A)
Review
I wrote my first review in June after trading in a 2004 F-150. It has only got better and better. Absolutely no issues. Fuel mileage has gone to over 23 MPG on a recent hiway only trip of 600 miles, to between 15-18 MPG back and forth to work and weekend trips. I have not had this kind of acceleration since my '61 Vette'. There are no rattles or any fit/finish problems. Only oil changes and tire rotation. I would not trade this truck for any other on the market. I did extensive reseach and I am so glad I choose this HD2500, Duramax/Allison. I would recommend this truck to anyone, no hesitation.
Favorite Features
I love the room and comfort. The info center is still a great feature and keeps me aware of temps, mileage, tire pressure, etc. I love the OnStar and would recommend it.
Suggested Improvements
Dump the XM radio.
2 out 2 people found this review helpful
A refined, well built truck
Overall Rating
| Performance: | 6 | Fun-to-Drive: | 6 | Build Quality: | 7 |
| Comfort: | 7 | Interior Design: | 8 | Reliability: | 6 |
| Fuel Economy: | 3 | Exterior Design: | 6 | ||
Vehicle
2008 GMC Sierra 2500HD SLT 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
Review
Well designed, well built truck that is a pleasure to drive, but it struggles to pull my small 6000lb 5th wheel trailer over some moutain passes. ATF temps up around 215 deg although total weight well within published rating. Front end styling is ugly.
Favorite Features
Good interior styling. Good handling. Excellent transmission. Control features. Solid build quality
Suggested Improvements
Reduce engine noise Add higher capacity transmission cooler Refine front end styling Add passenger grab handle (like on 2003) Include mud flaps and side step bars - (these are essentials)
4 out 6 people found this review helpful
Excellent HD choice & great value
Overall Rating
| Performance: | 9 | Fun-to-Drive: | 10 | Build Quality: | 10 |
| Comfort: | 10 | Interior Design: | 10 | Reliability: | 10 |
| Fuel Economy: | 5 | Exterior Design: | 10 | ||
Vehicle
2008 GMC Sierra 2500HD SLE1 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
Review
I got one of the first 08 2500HDs off the line as a custom order back in Aug. 07. For what I paid, this truck is an amazing value when compared to the F250s and Ram 2500s out there. The gas V8 has plenty of power and tows a 5000 lb trailer with ease. At first I had a problem with the transmission not downshifting easily in the 25-50 mph range, but the dealer flashed the ECU and now it's more responsive (although a bit less smooth- shifting - before it was like silk). Fuel economy has been mostly around 10-11 in the city, anywhere from 12-18 on the highway (the faster you go, the worse it gets). Most impressive is the quality. The interior and overall feel of the 2500HD is very solid.
Favorite Features
Gas V8 power. Smooth 6-speed auto. Front seat comfort. Interior look & quality. Exterior build quality. Not that rough of a ride (much better than my 01 Dodge Dakota and 04 Tacoma). Superb value for what you get.
Suggested Improvements
Make sure you get the ECU flash for the tranny, which makes it more responsive downshifting in the 25-50 mph range. Otherwise, 11 months and 12,500 miles later, no issues.
11 out 11 people found this review helpful
Great truck but a kidney blaster empty
Overall Rating
| Performance: | 8 | Fun-to-Drive: | 9 | Build Quality: | 10 |
| Comfort: | 6 | Interior Design: | 10 | Reliability: | 10 |
| Fuel Economy: | 6 | Exterior Design: | 10 | ||
Vehicle
2008 GMC Sierra 2500HD Work Truck 2dr Regular Cab 4WD LB (6.0L 8cyl 6A)
Review
I love this truck but when I am not towing or under load she will shake you on bad michigan roads. I decided to weigh it down a bit in the back and that has smoothed it out for sure. MPG is 12. 12 @ 74 towing the boat, 12 at 35 around town. I got 14 on the highway going 65 but that was hard to take for a 2mpg gain. Love the solid feel of the truck!
Favorite Features
Solid feel
Suggested Improvements
Soften the ride just a bit
3 out 5 people found this review helpful
This is one super 3/4 ton truck
Overall Rating
| Performance: | 10 | Fun-to-Drive: | 10 | Build Quality: | 10 |
| Comfort: | 10 | Interior Design: | 10 | Reliability: | 10 |
| Fuel Economy: | 8 | Exterior Design: | 10 | ||
Vehicle
2008 GMC Sierra 2500HD SLE2 4dr Crew Cab 4WD SB (6.0L 8cyl 6A)
Review
Bought an 08 Duramax 4x4 last month and just love the this truck. Ride is very predictable for a 3/4 ton, little harsh but if you wanted a smooth ride go with the 1/2 ton. The diesel has got a lot of horsepower. I love the quick acceleration this truck offers. I pull a trailer that goes about 6000 lbs. If you're looking for a truck to tow and gets generous fuel economy this is the truck.
Favorite Features
The new outside style and interior are my favorites. Dual electric seats up front is great and large trailer mirrors work great. I think GM hit a home run with this truck. I get about 17 MPG on the highway
Suggested Improvements
Fold down arm rest for the front seats, and extension in the sun visors would be great.
3 out 3 people found this review helpful
Transmission/ride
Overall Rating
| Performance: | 6 | Fun-to-Drive: | 6 | Build Quality: | 7 |
| Comfort: | 6 | Interior Design: | 8 | Reliability: | 6 |
| Fuel Economy: | 4 | Exterior Design: | 8 | ||
Vehicle
2008 GMC Sierra 2500HD SLT 4dr Crew Cab SB (6.0L 8cyl 6A)
Review
This truck is by far the worst riding vehicle i have ever owned. I understand it is a HD, but come on GM, you're not always towing with it 100% of the time. I cannot believe the research and development guys at GM designed it that way. The rear end bounces 60% the time when empty or partially empty. tryed changing shocks and tire pressure adjustment. helped out about 5%. The new 6 speed tranmission in my truck needs work. There is a delay in shifting between 2nd and 3rd gear. This happen 10% to 20% of the time but is annoying.When the delay happens engine racing anywhere from 200 rpm to 1000 before the shift takes place.Tranmission engages harshly when shift happens. Look elsewhere.
Favorite Features
Exterior body style. Interior appointment
Suggested Improvements
Transmission. Delay in shifting. Interior noise due to shifting of plastic and weatherstripping around doors. Horrible ride when transporting family around town.
5 out 11 people found this review helpful
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