GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Make sure the I/P lamp dimmer switch is off.
  2. Remove key from the ignition key cylinder lock.
  3. Close all vehicle doors.
  4. Press once the lock button on the keyless entry transmitter.
    • All doors lock.
    • The courtesy lights turn off.

2

Press once the unlock button on the keyless entry transmitter.

    • The driver's door unlocks when pressing unlock once on the keyless entry transmitter.
    • The courtesy lights illuminate for 36-44 seconds.

3

Press the unlock button on the keyless entry transmitter again within 5 seconds of step 2.

All doors unlock when pressing unlock twice on the keyless entry transmitter.

4

Press the alarm button on the keyless entry transmitter.

The headlamps flash and the horn sounds alternately for two minutes, or until pressing the alarm button again on the keyless entry transmitter.

Door Lock Inoperative with Transmitter - All

5

Press the rear compartment button on the keyless entry transmitter.

Rear compartment lid releases

Rear Release Inoperative with Transmitter

6

Remote unlock verification feature:

  1. Make sure key is removed from the ignition key cylinder lock.
  2. Close all vehicle doors.
  3. While observing the headlamps and listening to the horn, press once the unlock button on the keyless entry transmitter.

Based on the current remote unlock verification mode:

    • Mode 1: Feature disabled. No headlamps flash nor horn sounds when unlocking doors using the keyless entry transmitter.
    • Mode 2: Horn sounds when pressing unlock on the keyless entry transmitter.
    • Mode 3: Headlamps flash when pressing unlock on the keyless entry transmitter.
    • Mode 4: Headlamps flash and horn sounds when pressing unlock on the keyless entry transmitter.

Refer to Remote Activation Verification System Operation for more information.

Keyless Entry System Inoperative

7

Remote lock verification feature:

  1. Make sure key is removed from the ignition key cylinder lock.
  2. Close all vehicle doors.
  3. While observing the headlamps and listening to the horn, press once the lock button on the keyless entry transmitter.

Based on the current remote lock verification mode:

    • Mode 1: Feature disabled. No headlamps flash nor horn sounds when locking doors using the keyless entry transmitter.
    • Mode 2: Horn sounds when pressing lock on the keyless entry transmitter.
    • Mode 3: Headlamps flash when pressing lock on the keyless entry transmitter.
    • Mode 4: Headlamps flash and horn sounds when pressing lock on the keyless entry transmitter.

Refer to Remote Activation Verification System Operation for more information.

Keyless Entry System Inoperative

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