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Used 2004 GMC Sierra 2500HD Consumer Reviews

4.3 out of 5 stars
51 reviews

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We have a limited number of reviews for the 2004 Sierra 2500HD, so we've included reviews for other years of the Sierra 2500HD since its last redesign.

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Pros
Cons
5 out of 5 stars

Duramax Powered

Montana diesel, 02/24/2010
2004 GMC Sierra 2500HD 4dr Crew Cab SLE 4WD SB (6.0L 8cyl 4A)
6 of 8 people found this review helpful

I have the 2nd generation LLY Duramax engine in mine and i love it. I had to replace the injectors when i bought it at 130,000 but other than that i have just been upgrading. The ride is great, the seats are comfortable, the fuel economy is good, 20-24 highway, 15-18 city, if i keep my foot out of it(hard to do with 400 HP and 600LbFt of torque on tap). I have not had any major breakdowns since owning it. The transmission did blow up at 143,000, but it was a freak electrical short that caused it to engage 2 gears at once(lots of chunks in the pan). It actually got me all the way back to the shop in limp mode which was about 25 miles, 10 of which on a logging road.

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5 out of 5 stars

GMC 2500 HD/ Durmax Diesel

tabinmn, 08/28/2004
2004 GMC Sierra 2500HD 4dr Crew Cab SLT 4WD SB (6.0L 8cyl 4A)
4 of 5 people found this review helpful

I appreciate the diverse choices when purchasing vehicles but choose to pick GM d/t the ability to find anything from fast sports cars, Corvette, to tough Durmax Diesel. The current Vehicle of choice is as described above and I wouldnt tow w/out the performance of the GMC Sierra 2500 HD Durmax Diesel. Not only does the beautifully engineered design look great driving down the highway but also performs outstanding w/absolutely no problems. This is my 3rd Duramax and would recommend it to any serious driver that needs a truck w/towing capacity. Not to mention gas milege...what truck of this capacity can get

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4.88 out of 5 stars

Fuel Economy

Chevy Man, 03/03/2010
2003 GMC Sierra 2500HD 4dr Crew Cab SLE 4WD SB (6.0L 8cyl 4A)
6 of 9 people found this review helpful

I've had my 2500HD for just under a year now and I LOVE it. The only problem I really have is its fuel economy. I average around 14 mpg, but where it lacks fuel economy it makes up for it in power. I haul around a skidsteer on a 14 ft open trailer. The skidsteer weighs more then my truck but still no problems pulling it. The fuel economy doesn't really change weather your hauling or not. I just purchased an SLR performance chip that should do the trick. This truck is perfect for anyone with the money to pay for gas.

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4.88 out of 5 stars

Diesel is wonderful

E. Daniel Shoemaker, 06/18/2004
2004 GMC Sierra 2500HD 4dr Crew Cab SLT 4WD LB (6.0L 8cyl 4A)
2 of 2 people found this review helpful

Traded in my 96' GMC 3/4 ton Suburban, w/ 454 Vortec engine for this new crew cab, Duramax w/ Allison transmission. Wow what a difference in towing power. Previously driving over mountins into Prescott and Payson, from the Phoenix area, we were lucky to keep up 35mph. Now, wow, 65mph over the same roads and mountains, towing the same trailer. Diesel milage is better than the gas by about 5 to 6 mpg. Wish the Suburban had this engine/trans.

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4 out of 5 stars

Been driving this truck since new

T, 09/20/2021
2003 GMC Sierra 2500HD 4dr Extended Cab SLE Rwd LB (6.0L 8cyl 4A)
2 of 2 people found this review helpful

Bought the extended cab gas 6.0l engine with the 480LE transmission combo in 2003. Currently has 250k+, and other than a tranny rebuild at 150k and normal maintenance issues, this thing is a champ. Keep up with fluid changes, no problems. Has towing and carrying cap, no problems and it rides better loaded out with 1500 poinds. HEAVY undercarriage construction. Still running smooth and still with original plugs

Safety
4 out of 5 stars
Technology
2 out of 5 stars
Performance
4 out of 5 stars
Interior
3 out of 5 stars
Comfort
3 out of 5 stars
Reliability
5 out of 5 stars
Value
5 out of 5 stars
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