GM Service Manual Online
For 1990-2009 cars only

If your vehicle has this feature, you can lock and unlock your doors from about 3 feet (1 m) up to 30 feet (9 m) away using the remote keyless entry transmitter supplied with your vehicle.


Object Number: 811249  Size: A3
UNLOCK: Press UNLOCK once for the driver's door to unlock, the parking lamps to flash and the interior lights to go on.

If you press UNLOCK again within three seconds, all doors will unlock.

LOCK: Press LOCK to lock all the doors. Press LOCK again within three seconds and the horn will chirp.

REAR 2X: Press the REAR button twice within three seconds to unlock the rear hatch or cargo doors. The parking lamps will flash and the interior lights will go on. If the engine is running, the automatic transmission must be in PARK (P) or NEUTRAL (N) for the REAR 2X button to operate.

(Panic Alarm): Press this button for the horn to sound and the headlamps and taillamps to flash for up to 30 seconds. This can be turned off by pressing the panic button again, waiting for 30 seconds, or starting the vehicle.

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 four 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 transmitter won't work at the normal range in any location. If you have to get close to your vehicle before the transmitter works, it's 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.

To replace the battery, do the following:


Object Number: 812555  Size: B3
  1. Insert a thin object like a dime to separate the bottom of the transmitter from the top.
  2. Remove the battery and replace it with a new one, making sure the positive (+) side of the battery is facing down. Use one Panasonic® three-volt, type CR2032, or equivalent battery.
  3. Snap the top and bottom together.