GM Service Manual Online
For 1990-2009 cars only

Problem

Action

The blower motor control does not operate correctly.

Go to Blower Motor Inoperative at Any Speed Blower Has High Speed Only

The rear defogger and heated mirrors do not operate correctly.

Go to Rear Window Defogger Inoperative Heated Mirrors Inoperative

The heated mirrors do not operate. The rear defogger operates correctly.

Go to Heated Mirrors Inoperative

The rear defogger does not operate. The heated mirrors operate correctly.

Go to Rear Window Defogger Inoperative

The rear defogger and the heated mirrors are on at all times.

Go to Rear Window Defogger Inoperative Heated Mirrors Inoperative

The air distribution (air delivery) system does not operate correctly.

Go to Air Delivery Improper