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 number below refers to the step number on the diagnostic table.

7) - Listen for an audible click when the Rear Window Defogger relay operates. Command both the ON and OFF states of the Rear Window Defogger relay. Repeat the commands as necessary.

Fig 1: Defogger Inoperative - Rear Window Diagnosis (Steps 1-4)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Defogger Inoperative - Rear Window Diagnosis (Steps 5-13)

Courtesy of GENERAL MOTORS CORP.

Fig 3: Defogger Inoperative - Rear Window Diagnosis (Steps 14-24)

Courtesy of GENERAL MOTORS CORP.