2003 GMC Sierra 3500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 GMC Sierra 3500

2003 GMC Sierra 3500 Problems

Fuel Level Sensor Failure

It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.

Stalling or Low Engine Idle Speed Due to Dirty Throttle Body

A dirty throttle body may cause a lower than normal idle and possible stalling condition. Performing a throttle body service will commonly correct this concern.

Corrosion on Battery Cable Ends

The battery may leak acid at the battery cable connections. As a result corrosion may form on the battery cable ends. Leaking batteries should be replaced and the cables need to be thoroughly cleaned or replaced if necessary.

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2003 GMC Sierra 3500 Questions

My Heated Seat Control keeps coming on without notice & It wont shutoff turns on (1 answer)

The heated seat indicator comes on and I shut it off and it constantly comes back on automatically. Any suggestions what the problem would be?

How do you remove the starter? (1 answer)

How do I remove the starter?

engine started smoking 4months ago not oil smoke it is deseil exhaust (1 answer)

changed motor oil and filter changed feul filter engine still smokes

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2003 GMC Sierra 3500 Recalls

Recall 05V161000
ON CERTAIN PICKUP TRUCKS EQUIPPED WITH MANUAL TRANSMISSIONS AND BUILT WITH EITHER PBR PARKING BRAKE SYSTEMS OR TRW PARKING BRAKE SYSTEMS, THE PARKING BRAKE FRICTION LININGS MAY WEAR TO AN EXTENT WHERE THE PARKING BRAKE CAN BECOME INEFFECTIVE IN IMMOBILIZING A PARKED VEHICLE.
Rear Seat Belt for Smaller Passengers May Not Fit Correctly

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.

Recall 04V129000
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...

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2003 GMC Sierra 3500 Reviews

1 Bad ASS truck, 160,000. Best for the money.

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