Used 2008 GMC Sierra 2500HD Extended Cab Consumer Reviews

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$4,154 - $6,939

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Pros
Cons

Excellent HD choice & great value

Dave, 07/25/2008
SLE1 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
6 of 6 people found this review helpful

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.

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Not a fan

notafan, 02/13/2009
SLE1 4dr Extended Cab 4WD LB (6.0L 8cyl 6A)
5 of 5 people found this review helpful

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.

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A refined, well built truck

MountainMan, 09/20/2008
SLT 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
3 of 3 people found this review helpful

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.

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Sharp comfortable work truck

efflandt, 01/13/2008
SLE1 4dr Extended Cab 4WD SB (6.0L 8cyl 6A)
2 of 2 people found this review helpful

I am just approaching its first 1000 miles, so 13.8 ave. mpg of the 6.0L gas engine in wet to snowy suburban/hwy driving may improve in milder/dry weather as it gets broken in. The SLE1 interior trim is a step up from your average work truck with comfortable seats and leather wrapped steering wheel. A smooth quiet ride for a heavy duty truck under most conditions. Feels heavy, but stable and turns on a dime when you want it to. The 26 gal tank may seem limiting, but that is still good for mid-300 mile range, farther than most people would drive without taking a break. Overall it would be hard to find a better truck.

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08 GMC 3/4 duramax! is it worth it?

qoh322, 11/06/2007
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.

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