Test Description

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

Listen for an audible click when the Rear Defog relay operates. Command both the ON and OFF states of the rear defog relay. Repeat the commands as necessary.

Fig 1: Rear Window Defogger Inoperative Diagnostic Procedure (Steps 1-8)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Rear Window Defogger Inoperative Diagnostic Procedure (Steps 9-21)

Courtesy of GENERAL MOTORS CORP.