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Resources for the Repair and Maintenance of your 2003 GMC Sierra 1500

2003 GMC Sierra 1500

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2003 GMC Sierra 1500 Problems

Drive Train -- Verified

The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.

Suspension & Steering -- Verified

The steering may develop a clunk type noise from the upper intermediate steering shaft.  Our technicians tell us that you should check with you local GM dealer to find out what the latest repair is for this condition.

Electrical & Lights -- Verified

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.

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 1999-2003 models is #4114K (trade number).

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.

2003 GMC Sierra 1500 Recalls (Recent)

Body, Interior & Misc., September 9, 2004

Summary: CERTAIN EXTENDED AND REGULAR CAB PICKUP TRUCKS AND CARGO VANS CONVERTED TO COMPRESSED NATURAL GAS (CNG) FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, 'CHILD RESTRAINT ANCHORAGE SYSTEMS.' THESE VEHICLES HAVE ONE SEATING POSITION, THE CENTER REAR SEAT, EQUIPPED WITH CHILD RESTRAINT LOWER ANCHORAGES.

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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, July 29, 2005

Summary: 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.

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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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2003 GMC Sierra 1500 Questions and Answers

SPEEDR, 2003 GMC Sierra 1500, V8, Chardon, OH

I GOT A LOW COOLANT LEVEL WARNING ON DASH.I DO NOT SEE ANY COOLANT LEAKING ANY WHERE,IS THERE A COMMON AREA WHERE THERE MAY BE LEAKS?IT IS A 4.8 LTR V8 W/ 5SPD MANUAL & 4X4

justaperson, 2003 GMC Sierra 1500, 4.8L V8, Augusta, ME

Can I change the light bulbs of the instrument cluster of my 03 GMC Sierra? If so, how?

The park, reverse neutral, and drive lights continously go on and off when a bump is hit and other times t...

jameinke, 2003 GMC Sierra 1500, Harrison Township, MI

How do I remove the drivers interior door panel?

texasstar0068, 2003 GMC Sierra 1500, 4.8L V8, Vidor, TX

The tail gate won't let down. The left latch releases but the right wont.

Visitor, 2003 GMC Sierra 1500, 5.3L V8, Roseville, CA

water is leaking inside the cab of the driver's side when the air conditioning is turn on. What's the problem? How can I fix it myself?

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2003 GMC Sierra 1500 Reviews

Bought brand new, with lots of extras. Z71, 5.3L, leather, dual-zone heat/air etc. Got extended warranty and only had minor problems with the truck. Brake pads, and mirror defroster.
Major problems were oxygen sensors, and the brakes. Right rear pads wore out every 6 to 10K, until they put in a 'metering valve. That extended it to 35k.
Currently have 134k on truck and have a few issues: Brakes (heavy foot pressure needed), Oil Gauge (pegged high), and the always familiar 'check engine light'.
Overall rating is, great. I still love my truck and it's go anywhere 4x4 drive and big comfy seats.

I purchased my truck through priviate party. So far I've had to replace the fuel pump and distributor cap. Overall, I love this truck and the power.

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