GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Engage the parking brake.
  2. Turn the ignition switch to the ON position.
  3. Depress the brake pedal.
  4. Depress the manual selector lever button and attempt to move the automatic transaxle control lever from the P position.

The automatic transaxle control lever cannot be moved from the P position.

Automatic Transmission Shift Lock Control Inoperative

Automatic Transmission Shift Lock Control Inoperative

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