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 (1m) up to 30 feet (9 m) away using the remote keyless entry transmitter supplied with your vehicle.

UNLOCK: Press UNLOCK to unlock the driver's door. The parking lamps will flash and the interior lamps will go on. If you press UNLOCK twice within three seconds, the remaining doors will unlock.

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

REAR: When you press the REAR button twice within three seconds to release the rear liftglass, the parking lamps will flash and the interior lamps will go on. If your vehicle has an automatic transmission, the transmission must be in PARK (P) or NEUTRAL (N). If your vehicle has a manual transmission, the parking brake must be engaged.

(Remote Alarm): Press this button on the key transmitter to make the horn sound and the headlamps and taillamps flash for up to 30 seconds. This can be turned off by pressing the remote alarm 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 in the remote keyless entry transmitter do the following:


    Object Number: 808454  Size: B3
  1. Insert an object like a thin coin in the slot between the covers of the transmitter housing near the key ring hole. Remove the bottom by twisting the object.
  2. Remove and replace the battery with a three-volt CR2032 or equivalent battery, positive (+) side up.
  3. Align the covers and snap them together.
  4. Check the operation of the transmitter.