2004 GMC Sierra 2500HD Review | Edmunds.com

2004 GMC Sierra 2500HD

GMC Sierra 2500HD Features and Specs

Features & Specs

  • Engine 6.0 L V 8-cylinder
  • Drivetrain Rear Wheel Drive
  • Transmission 4-speed Automatic
  • Horse Power 300 hp @ 4400 rpm
  • Fuel Economy 0/0 mpg
  • Bluetooth No
  • Navigation No
  • Heated Seats No

Review of the 2004 GMC Sierra 2500HD

  • With its powerful engine lineup and revised interiors, the heavy-duty Sierra makes a strong case for itself against the competition, but questionable build quality keeps us from calling it best in class.

  • Safety
  • Pros

    Powerful drivetrains, roomy interior, numerous available amenities.

  • Cons

    Spotty build quality, cheap interior materials.

  • What's New for 2004

    Base trucks get upgraded via newly standard cruise control, chrome wheels, chrome rear bumper and chrome grille surround. The SLE trim…

What Others Are Saying

Customer Reviews

  Average Consumer Rating (26 total reviews)

Fuel economy

by on
Vehicle: 2003 GMC Sierra 2500HD

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.

Duramax and allison are superior

by on
Vehicle: 2003 GMC Sierra 2500HD

I have owned this truck since new in 2003. Only in the last several years have I used it to its full potential. I have pulled a 10,000 lb fifth wheel to Florida twice and a new 12,000 lb fifth wheel to GA last week and I averaged a little over 13 mpg. On the return trip I got over 24 mpg running at 70 mph all day. I do have a tonneau cover for the bed which might help. I first took this new truck to Ohio in 2003 and only got 22 mpg with the same configuration. I did add a K and N air induction system before my last trip but this truck pulls like a champ without any additonal brains or Banks kits. The 5 speed transmssion is smooth and I know improvements have been made in the 09's.

Truck of the year

by on
Vehicle: 2003 GMC Sierra 2500HD

Fuel milage is great, 15-18 mpg.Steering column has presented a few small issues allong with sticky power mirror on the drivers side - replaced once.

Gas Mileage


  • Not Available
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Full 2004 GMC Sierra 2500HD Review

What's New for 2004

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.

Talk About The 2004 Sierra 2500HD

2004 GMC Sierra 2500HD Discussions See all Started By

I cannot get the front axles to engage, I have replaced the front actuator, and the 4W/D indicator lamp switch which did not help. My next step is to look for a broken wire in the harness going back?...

I have a 2004 GMC Sierra 2500HD crew cab. Ever since I purchased the vehicle last April (2005) I have had nothing but problems with the RADIO. I have taken the truck to 3 different dealers in 3 diffe...