Diagnostic Aids

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Before diagnosis of the steering wheel controls, ensure the primary controls of the associated component are functioning properly.
If a single switch function is inoperative, test the suspect switch. Refer to component testing.
DTC B1529 07 may be set if the vehicle is equipped with dual batteries that is incorrectly hooked up, or the vehicle is jump started by a tow truck with dual batteries.