Overview & Reviews

Base trucks get upgraded via newly standard cruise control, chrome wheels, chrome rear bumper and chrome grille surround. The SLE trim adds foglamps to its generous list of features. The Work Truck Package (with unique grille treatment) is now available on all models. Lastly, a trio of new colors, Sand Beige Metallic, Silver Birch and Sport Red Metallic debut.

• Powerful drivetrains, roomy interior, numerous available amenities.

• Spotty build quality, cheap interior materials.

User Reviews:

Showing 11 through 20 of 22.00

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  GMC 2500HD - 2004 GMC Sierra 2500HD
  By wpatrus - August 19 - 2:00 am

  I am pleased with my purchase at this time. It tows as is expected for a truck with its power- it is capable in the woods and farm as well as on the highway-- though the fuel economy is a jolt. But then again it is alot of weight to move.

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  Dons Review - 2004 GMC Sierra 2500HD
  By Don Bland - January 13 - 10:00 am

  The experience of getting better gas milage with the 6.0 motor in the GMC as opposed to the 4.8 in my Chev, makes me wish I had bought the Chev with the 6.o instead of the 4.8. Factor in the added pulling power, makes it far better. I highly reccomend getting the 6.0 in either model truck.

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  BUY ONE!!! - 2004 GMC Sierra 2500HD
  By LUV my Duramax - October 25 - 2:00 am

  I purchased my truck about 3 weeks ago, and have put 1800 miles on it. I absolutely love the Duramax/Allison combo. Anything with this setup will drive like a dream. The Duramax doesnt hesitate with anything, and the allison smartly downshifts when slowing down to reduce brake wear. This truck is also the quietest diesel Ive tested, when comparing the "BIG 3". At anything above 50mph you cant even notice youre running a diesel. ...every time I drive it...I like it even more...nuff said.

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  GMC Duramax - 2004 GMC Sierra 2500HD
  By chz - October 8 - 10:00 am

  This truck is awesome. We pull a 5th wheel camper and it pulls it like there is nothing there at all. Great truck.

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  2004 Gmc Duramax Allison Auto - 2004 GMC Sierra 2500HD
  By J. Miller - March 19 - 2:00 am

  Bought Brand New 3 months ago and now have just under 10K miles. The Duramax is all that and more. Excellent Truck!! Not one problem so far!! Ride Quality is awesome for a 2500HD Truck!

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  Diesel is wonderful - 2004 GMC Sierra 2500HD
  By E. Daniel Shoemaker - October 31 - 10:00 am

  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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  GMC 2500HD 4 years later - 2004 GMC Sierra 2500HD
  By Steve Coleman - September 15 - 1:53 pm

  Truck has been overall a good unit. Windsheild leak when new at passenger floorboard and behind dash. Took 1 year for local dealer to finally fix. Climate Control slow to activate fan, really noticable on hot days, seems I have to press brake pedal to start blower (wierd). Trans will sometimes start in 2nd gear, then shift to 1st. Usual problems with intermiediate steering shaft (now on 2nd fix), drivers seat belt and armrest broke, pass side also (wrty fixes). Also having wierd problem during cold months with intermittent dash light and guages recycling, no fix yet. Orig brakes are still strong at 90k miles, tire wear good, body still tight and quiet, engine strong with no oil usage

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  4dr Crew Cab SLT 4WD SB Duramax/Allison - 2004 GMC Sierra 2500HD
  By Michigan Mike - January 17 - 10:00 am

  This is my first pickup. Used to own a 93 Suburban. Traded an Acura CL Type S for this truck. Surprisingly good build quality. After 1500 miles, no problems at all. In the Acura I had to replace the front seat and the sunroof after this many miles. Wish that the OnStar GPS system could be hooked into a 3rd party navigation system with a screen and DVD. Performance (acceleration, braking) is great, though Ive not yet towed anything. Heated seats are better/warmer than those in Acura. No complaints!

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  Duramax Powered - 2004 GMC Sierra 2500HD
  By Montana diesel - May 23 - 3:00 am

  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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  another awesome gm truck - 2004 GMC Sierra 2500HD
  By ronald tootle - May 20 - 10:00 am

  this is the fifth (sixth if you count my Tahoe) gm truck that i have had and it is by far the best. talk about reliable. a heavy duty truck that has no problems pullikng my triler in any clime and place. in the snow, on the beach, it does not matter. talk about space, i have two kids and a dog and we travel with no problems, even on long trips. i will never own another type of truck, from any dealer...now a hummer...that is a different issue. ron tootle major, us marine corps camp lejeune nc gm truck owner since 1985 1985 chevy s-10 1988 chevy s-10 2001 chevy silerado ext cab z-71 2002 gmc sierra ext cab z-71 2002 chevy tahoe 4x4 2004 gmc sierra 2500hd quad cab 4x4