GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Press any door lock switch to the lock position.
  2. Press any door lock switch to the unlock position.
  1. Door locks activate to the lock position.
  2. Door locks activate to the unlock position.

Power Door Locks Switch Inoperative - One

2

Activate all door lock switches to both lock and unlock positions.

All switches activate all of the door locks to the lock and unlock positions.

Power Door Locks Inoperative - All Doors and Switches

3

When all of the switches are activated to either position.

Each individual switch locks and unlocks all door locks.

Power Door Locks Inoperative - One Motor

4

When all of the switches are activated to either position.

Each individual switch locks and unlocks all door locks.

Power Door Locks Switch Lock Function Inoperative - One

5

When all of the switches are activated to either position.

Each door lock unlocks and locks from all switches.

Power Door Locks Inoperative - One Motor

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