GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Cavalier 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Defogger System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Turn the ignition switch on.
  2. Press and release the defogger switch one time.
  3. Wait approximately 12 minutes.
    • Defogger ON indicator comes on.
    • Defoggers come on.
    • After approximately 10 minutes, both the defogger ON indicator and the defoggers turn off.

Rear Window Defogger Inoperative

2
  1. Press and release the Defogger switch one time.
  2. Wait approximately 7 minutes.
    • Defogger ON indicator comes on.
    • Defoggers come on.
    • After approximately 5 minutes, both the defogger ON indicator and the defoggers turn off.

Rear Window Defogger Inoperative

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.