Test Description

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The following number(s) refer to the step(s) on the diagnostic table.

3) - Determines if the OnStar® status LED has the necessary GRN LED signal circuit.
5) - If the GRN LED signal is shorted to voltage then the OnStar® three button assembly has been damaged. The OnStar® three button assembly has to be replaced.

Fig 1: OnStar® Button LED Inoperative Diagnosis (Steps 1-8)

Courtesy of GENERAL MOTORS CORP.

Fig 2: OnStar® Button LED Inoperative Diagnosis (Steps 9-10)

Courtesy of GENERAL MOTORS CORP.