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.
Resources for the Repair and Maintenance of your 2003 GMC Sierra 1500
2003 GMC Sierra 1500
2003 GMC Sierra 1500 Problems
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.
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.
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).
One or both secondary air injection check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one bank of cylinders. Replacing only one valve may result in a return trip to the repair shop.
2003 GMC Sierra 1500 Recalls (Recent)
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.Learn more »
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.
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.Learn more »
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.Learn more »
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.
2003 GMC Sierra 1500 Questions and Answers
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
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...
How do I remove the drivers interior door panel?
The tail gate won't let down. The left latch releases but the right wont.
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.