GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Operate the left front door lock switch.

All of the doors lock and unlock.

2

Operate the right front door lock switch.

All of the doors lock and unlock.

Automatic Door Locks Inoperative with One Switch

3

Unlock one door with the key.

The door unlocks and the other doors remain locked.

Automatic Door Locks - Unlock Inoperative

4

  1. Open the left front door.
  2. Move the left front door lock switch to LOCK.
  3. Close the left front door.
  4. Attempt to open each door with the door handle.

The doors are all locked.

Automatic Door Locks Inoperative with One Switch

5

(Automatic Transaxle)

  1. Turn the ignition switch to the RUN position.
  2. Close both of the front doors.
  3. Unlock all of the doors.
  4. Move the gear selector from PARK to DRIVE.

All of the doors lock.

Automatic Door Locks Inoperative

6

(Manual Transmission)

  1. Close both of the front doors.
  2. Drive the vehicle and accelerate to more than 24 km/h (15 mph).

All of the doors lock.

Automatic Door Locks Inoperative

7

Turn the ignition switch off.

All of the doors unlock.

Automatic Door Locks - Unlock Inoperative

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