2003 Chevrolet Avalanche 1500 electrical system problems

84 owner complaints filed with NHTSA name the electrical system on the 2003 Chevrolet Avalanche 1500 — 46% of all complaints for this model year.

Electrical System complaints

46%

share of all complaints

85,000 mi

median reported incident mileage

0 / 1

crash / fire reports

What owners report

“I bought this vehicle and the cluster is out I do not know what model this is other than a z66 so I cannot see on how to program my phone at to the onstar or any of that I don't know if I have satellite radio there is no auxiliary plug in heated seats it's only the back of the seat that works I'm…”
filed Jan 7, 2021
“I am a new owner of a 2003 avalanche, I was satisfied with my purchase but my soonroof falls under the appropriate serial numbers (6,000,000-6,300,000) recall states that it may be covered by the company webasto hollandia. Vehicle is fine to drive places but sunroof must be fixed for coming winter…”
filed Dec 23, 2020

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

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