Used 2008 GMC Sierra 2500HD Extended Cab Consumer Reviews
Used Sierra 2500HD for sale
08 GMC 3/4 duramax! is it worth it?
qoh322, 11/06/2007
2008 GMC Sierra 2500HD SLE2 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
2 of 2 people found this review helpful
This truck drives awesome! Holds the road great and very powerful (duramax). Current gas mileage is only 15.5-16.7 still breaking in. Truck only has 600 miles. Color is sonoma red.
15 months later, still a great truck
godblesstx, 12/24/2008
2008 GMC Sierra 2500HD SLE1 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
2 of 2 people found this review helpful
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.
2008 GMC Sierra 2500HD for sale near you
Showing 3 of 41 listings
- SLT Crew CabMSRP: $19,50010 mi away
- SLE1 Diesel Crew CabMSRP: $18,99994 mi away
- SLT DieselMSRP: $29,995334 mi away
See all 41 listings
A Decent Truck With a Poor Drivetrain
Kevin H, 12/27/2009
2008 GMC Sierra 2500HD SLT 4dr Extended Cab SB (6.0L 8cyl 6A)
3 of 4 people found this review helpful
This is a decent truck, but NOT with the 6.0 and GM 6 speed. You HAVE to get the Duramax if you need a 3/4 ton truck. The gas motor with fly by wire throttle, and GM 6 speed, is a horrible combination. It is a death trap when trying to merge with traffic, especially in conditions when you are on and off the throttle. There is up to a 3-4 second lag where absolutely no throttle input is given to the engine, no matter how hard you press on the accelerator. I believe GM implemented this so their tranny wouldn't explode. The engine and tranny computer work together, and the tranny computer tells the engine computer to not give any throttle until the tranny is ready (it never is).
Poor Gas Mileage
Sailer, 03/20/2008
2008 GMC Sierra 2500HD SLT 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
1 of 1 people found this review helpful
9.5 mpg city 10.7 highway. Door handle under armrest is a pain to get to. 5.3 engine would give enough power as I run empty 95% of time Needed 2500 to plow snow. Needs cup holders in dash.
So far, love it.
Woof, 04/11/2010
2008 GMC Sierra 2500HD SLT 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
1 of 1 people found this review helpful
I bought my 08 SLT, Diesel on New Year's eve day, 08. I have put on 17,000 miles mixed mostly highway and suburban with a good bit of weekend warrior hunting and camping trips. I commute in this baby and my combined mileage is 15.7 over the last 9 months. That's with a cap on the back,and with 35 miles a day in hardcore SF Bay Area highway traffic hell. I don't tow but it will haul a back end load of hunting equipment, dogs and coolers full of meat. Honestly, I could use a lesser truck for most of what I do, but when I need to step up this truck takes it and keeps going. I can stick 3 dogs in the back of the cab, w. seats folded and they ride in comfort and one of them clocks in at 120lbs