GM Service Manual Online
For 1990-2009 cars only

Object Number: 1202326  Size: A2

You can lock and unlock your vehicle using the remote keyless entry system:

(Lock/Unlock): Press this button to lock all of the doors. If all of the doors and the trunk are closed, the hazard lamps will flash once and the horn will chirp to indicate that locking has occurred and the theft-deterrent system will activate. Press the button again to unlock all of the doors. The hazard lamps will flash twice to indicate that unlocking has occurred and the theft-deterrent system will deactivate. If the door is not opened or if the engine is not started within 30 seconds after unlocking the doors with the transmitter, all of the doors will automatically lock and the theft-deterrent system will re-activate.

(Trunk): Press and hold this button for approximately one second to unlock the trunk. The horn will chirp twice to indicate that the trunk is unlocked.

The LED light on the transmitter will flash when the buttons on the transmitter are pressed.

The buttons, on the remote keyless entry transmitter, will not operate and the theft-deterrent system will not activate while the key is in the ignition. See Theft-Deterrent System for additional information.

Matching Transmitter(s) to Your Vehicle

Each remote keyless entry transmitter is coded to prevent another transmitter from unlocking your vehicle. If a transmitter is lost or stolen, a replacement can be purchased through your dealer. Remember to bring any remaining transmitters with you when you go to your dealer. When the dealer matches the replacement transmitter to your vehicle, any remaining transmitters must also be matched. Once your dealer has coded the new transmitter, the lost transmitter will not unlock your vehicle. Each vehicle can have a maximum of two transmitters matched to it.

Battery Replacement

Under normal use, the battery in your remote keyless entry transmitter should last about two years.

You can tell the battery is weak if the LED light fails to light or if the transmitter will not work at the normal range in any location. If you have to get close to your vehicle before the transmitter works, it is probably time to change the battery.

Notice: When replacing the battery, do not touch any of the circuitry on the transmitter. Static from your body could damage the transmitter.


Object Number: 1202328  Size: B3

To replace the battery in the remote keyless entry transmitter, do the following:

  1. Remove the screw from the back of the cover and open the cover of the transmitter.
  2. Pull the transmitter out of the cover and carefully detach the sticker from the unit. Keep the sticker clean.
  3. Remove the battery and replace it with the new one. Make sure the positive side of the battery faces up. Use one three-volt, CR1616, or equivalent, type battery.
  4. Attach the sticker and put the transmitter unit in the cover.
  5. Put the two halves back together and replace the screw. Make sure the cover is on tightly, so water will not get in.
  6. Test the transmitter operation.