2003 Chevrolet Avalanche 1500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Chevrolet Avalanche 1500
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2003 Chevrolet Avalanche 1500 ProblemsErratic Fuel Gauge Operation
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 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.
The headlight switch used on the Chevrolet Avalanche is known to fail through normal operation. Since the headlight switch is also integrated into the interior lights, a malfunctioning switch can cause issues with interior lights as well.
- Symptoms of a failed headlight switch include:
- Headlights and taillights failing to turn on or off
- Interior lights flicker, or fail to turn on or off
- Gauge cluster lighting off or flickering with headlights on
- Parking light malfunctions
This issue is well known with General Motors Trucks and SUVs, and is solved by testing and, if needed, replacing the headlight/dimmer switch. Bad grounding wires at the tail-lights, and dirty/corroded tow package wires can also lead to some of these issues.
2003 Chevrolet Avalanche 1500 QuestionsWhy is both T/C and ABS Indicator Lights coming b on and staying on all of the time (1 answer)
There is not really anything else to tell. Going by the owners manual , further damage may result if the remain on all of the time.
Cam sensor spark plugs wires coil crank sensor have all been changed. Just replaced the cats. And the p0306 is still coming up, what else could it be.?
Started and drove fine in the morning - no indication of weak battery - two hours later, completely dead - nothing electrical works - battery still seems charged. Any suggestions?
2003 Chevrolet Avalanche 1500 RecallsRear 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.
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.