GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Turn the ignition switch to ON.
  2. Place the gear selector lever in REVERSE.

The backup lamps turn on.

Backup Lamps Inoperative

2

  1. Place the transaxle gear selector in neutral (manual).
  2. Place the transaxle gear selector in park (automatic).
  3. Turn the ignition switch to the LOCK position.

The backup lamps turn off.

Backup Lamps Inoperative

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