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
$
266
to $
1,242
2003 Chevrolet Avalanche 1500
$
595
to $
867
2003 Chevrolet Avalanche 1500
$
379
to $
1,191
2003 Chevrolet Avalanche 1500
$
374
to $
608
2003 Chevrolet Avalanche 1500
$
131
to $
628

2003 Chevrolet Avalanche 1500 Problems

Erratic 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.

Service 4WD Message May be Displayed

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.

Instrument Panel Lights Flickering and Exterior Lights Intermittent

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. 

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2003 Chevrolet Avalanche 1500 Questions

Why 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.

P0306 have changed everything that is stated including both cats, still there (2 answers)

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.?

Avalanche is electrically dead - can't jump start it; what's wrong? (1 answer)

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?

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2003 Chevrolet Avalanche 1500 Recalls

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...
Hydro-Boost Relief Valve May Not Function Properly

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 Chevrolet Avalanche 1500 Reviews

Rated
based on 3 customer reviews
bought my 2003 new - like it but do have a couple problems -the last 3 years in a row ive had to replace all 4 rotors due to rust (truck has 63k miles)and sometimes it decides to go into 4wd by itself when you start it.(already replaced the switch) right now i need to replace the tailgate handle and need to know do i have to remove the interior panel to do this google says no but i cant see ho...
why doesn't my chevy avalanche pick up speed fast what could be something that can couse this?
I love my 2003. I have made several upgrades that makes it eveb better with great gas miles. The one thing I don't live is that the drive side fog light burns out about every other month. I also notice we I see other ones that this same light is out on thier truck too. I think it's a Chevy problem. The self leveling thing is a little bit of a pain in the a$$ when towing. Other then that I te...

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