Diagnostic Aids

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic is for the audio steering wheel controls.
Before diagnosis of the steering wheel controls, ensure the primary controls of the associated component are functioning properly.
Review with the schematic when testing switch resistance values.
If a single switch function is inoperative, test the suspect switch. Refer to Component Testing .
A poor connection at the right switch could cause both banks of switches to be inoperative or malfunction.