2008 GMC Sierra 2500HD Consumer Review: One Great Truck

2008 GMC Sierra 2500HD - Consumer Review

Average Consumer Rating

28 Total Reviews

SLT Crew Cab Pickup (6.0L V8 4x4 6-speed Automatic 6.6 ft. Bed)

Build Quality
Reliability Value
One Great Truck
By Big Rob on


2008 GMC Sierra 2500HD SLT 4dr Crew Cab 4WD SB (6.0L 8cyl 6A)


I purchased my 08 in October and now have 5000 miles on it. The fuel economy is around 16 in city and 18 on highway, but I am still in break-in period and expect improvement. Economy drops quickly north of 70 MPH. The Duramax and Allison are a great powerteam and while you can hear it shift, you cannot feel it. Interior on the SLT very well laid our and looks like it should be in a luxury car. The GM 100k warranty is a big plus. My only concern is the 26 gallon fuel tank is too small for hauling heavy trailers.

Best Features

Duramax / Allison team is awesome!

Worst Features

Larger fuel tank needed for HD trucks
Recommend (0) (1)

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