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Resources for the Repair and Maintenance of your 2004 GMC Sierra 2500 HD

2004 GMC Sierra 2500 HD

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2004 GMC Sierra 2500 HD Problems

Electrical & Lights -- Verified

The speedometer or other instrument panel gauge may begin to work erratically at times. Our technicians tell us that the instrument cluster must be sent to a repair facility to correct this fault. The warranty has been extended on some of these units to 7 years or 70,000 miles.

Heating & Air Conditioning -- Verified

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

Electrical & Lights -- Verified

The daytime running lights are prone to burning out. Our technicians tell us that the light sockets may show signs of heat damage but usually are OK. Always be sure to use the correct replacement bulb for the best life expectancy. The new bulb recommendation for 2001-2003 models is #4114K (trade number).

Heating & Air Conditioning -- Verified

Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.

Brakes -- Verified

Units with 4 wheel disk brakes may develop at situation where the park brake does not hold as it should. Our technicians tell us this can be caused by worn park brake shoes located inside the drum section of the rear brake disks. The worn shoes should be replaced and properly adjusted to correct this issue.

2004 GMC Sierra 2500 HD Recalls (Recent)

Body, Interior & Misc., July 21, 2005

RepairPal Expert Overview:

The second row center seat belt routing may make it difficult to position correctly on smaller passengers. If the seat belt rides up to fit around the abdomen, the risk of internal injury is increased in a crash. Dealers will cut the guide loop, remove a portion of the loop, and the remaining sides should be folded over and secured with a retainer. The recall began July 21, 2005. The GM recall number is 05037.

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Body, Interior & Misc., September 18, 2004

Summary: ON CERTAIN PICKUP TRUCKS AND SPORT UTILITY VEHICLES, THE GALVANIZED STEEL TAILGATE SUPPORT CABLES THAT RETAIN THE TAILGATE IN THE FULL OPEN (HORIZONTAL) POSITION MAY CORRODE, WEAKEN, AND EVENTUALLY FRACTURE. IF BOTH CABLES FRACTURED, THE TAILGATE WOULD SUDDENLY DROP AND STRIKE THE TOP SURFACE OF THE REAR BUMPER.

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Brakes, June 18, 2004

RepairPal Expert Overview:

The hydro-boost housing relief valve bore may be out of specification. The seal may fracture as a result, which may reduce braking assist and slightly increase the steering effort while braking. Under certain conditions, more braking effort will be required to stop the vehicle. Dealers will replace the hydro-boost relief valve. The recall began June 18, 2004. The GM recall number is 04004.

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Brakes, March 23, 2005

RepairPal Expert Overview:

On vehicles equipped with the Bosch hydraulic brake booster, the boost pressure accumulator may crack and break away from the hydro-boost assembly during normal operation. If this were to happen while the hood is open, fragments from the accumulator could injure people standing in the immediate area. The loss of fluid while driving would cause increased steering and braking effort and a crash could occur without warning. Dealers will test the hydro-boost assembly for function of the two-function valve. If the hydro-boost assembly fails the test, it will be replaced free of charge. The recall began March 23, 2005. The GM recall number is 05006.

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Engine, August 31, 2006

RepairPal Expert Overview:

The retainer clip for the fuel rail pulse damper may fracture and allow the damper to come loose from the fuel rail. A fuel leak in the presence of an ignition source may result in a fire. Dealers will replace the engine fuel rail pulse damper free of charge. The recall began August 31, 2006. The GM recall number is 06080.

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2004 GMC Sierra 2500 HD Questions and Answers

sanford06, 2004 GMC Sierra 2500 HD, Gasoline, Queensbury, NY

my 4wd service light came on this morning but is now off could you tell me why?

megabell, 2004 GMC Sierra 2500 HD, 6.0L V8, Tiverton, RI

The instrument cluster on my truck has been power cycling at random. It seems like a wiring harness is loose causing it to disconnect and reconnect. It can be off when I start the truck and as I dr...

Visitor, 2004 GMC Sierra 2500 HD, 6.0L V8, Phoenix, AZ

A couple of weeks ago my 2004 GMC 2500hd started misfireing while driving. I took it to a GMC service center & they don't know whats going on with it. They have never seen this type of iss...

Leerus, 2004 GMC Sierra 2500 HD, Diesel, Moro, AR

The airflow direction will not change when I turn the mode knob.

ronc., 2004 GMC Sierra 2500 HD, 6.0L V8, East Waterboro, ME

i get cold air on driver side and warm on passager syide with a/c on

Write a Review About Your Car

2004 GMC Sierra 2500 HD Reviews

Hello my truck runs great but the A/C / Heat control only works on HIGH!! I think I'm going to change out the control unit . How does that sound??? THANKS!! Oh also the turn signals ,when activated left/ right set the hazards off?!?! Spooky

Other than the computer and seat module issues it is a great truck.

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