First the front passenger and eventually all automatic door looks stopped responding. If you look out there, it is a known problem with the Avalanche at least for certain model years. Basically the parts inside your door wear out prematurely. I think it was an actuator or something like that but not sure. Anyway, negotiated with the dealership as I felt this was ridiculous to have door locks fail at 75K. I made a point that I had a vehicle...
Car problem reports
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Newest reported 2008 Chevrolet Avalanche problems
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The keyless entry system may stop working. Our technicians tell us the key fobs and keyless entry receiver may need to be replaced to correct this fault.
The upper dash may crack, most commonly on vehicles in warm climates and exposed to a lot of sunlight. The common repair is to replace the upper instrument trim panel. Information on a technical service bulletin or extended warranty is not available at this time.