2004 GMC Sierra 3500 Consumer Review: Duramax Dually 2004

2004 GMC Sierra 3500 - Consumer Review

Average Consumer Rating

6 Total Reviews

SLT Extended Cab Pickup (6.0L V8 4x4 4-speed Automatic 8.1 ft. Bed)

Build Quality
Reliability Value
Duramax Dually 2004
By Gilles on


2004 GMC Sierra 3500 4dr Extended Cab SLT 4WD LB DRW (6.0L 8cyl 4A)


I purchased the Sierra dually Duramax (LLY - 310hp & 605flbs) to pull a heavy fifth wheel and so far my experience has been trouble free. So far I am fully satisfied although I only have 30,000 km and time will provide more information on reliability of the Duramax. I find it fun to drive and fuel efficiency is good compared to the other diesel (Ford & Chrysler). It provide plenty of performance compare to a gas engine. The interior is perhaps blend as per the critics but it provides a price advantage compare to the Ford's King Ranch. It does not take away from the performance.

Best Features

I think that the Allison transmission is the main feature of the truck. The exterior design around the dual wheels has a more aerodynamic appeal.

Worst Features

The interior design could be improved but not at the expense of reliability. There are after market products available to increase output (hp & torque) that I wish GM would test and permit without invalidating the warranty.
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