GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Remove the key from the ignition lock key cylinder.
  2. Close both of the vehicle doors.
  3. Observe the door locks while you press the driver door lock switch to the lock position.

Both of the doors lock when you press the driver door lock switch.

2

Observe the door locks while you press the driver door lock switch to the unlock position.

Both of the doors unlock when you press the driver door unlock switch.

3

Observe the door locks while you press the passenger door lock switch to the lock position.

Both of the doors lock when you press the passenger door lock switch.

4

Observe the door locks while you press the passenger door lock switch to the unlock position.

Both of the doors unlock when you press the passenger door unlock switch.

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