GM Service Manual Online
For 1990-2009 cars only

Your vehicle may have this feature.


Object Number: 878804  Size: A3
[block ](Lock):  Pressing this button once will lock all of the doors. The parking lamps will flash and the interior lamps will turn on briefly. Press LOCK again within five seconds and the parking lamps will flash and the horn will chirp briefly.

(Unlock):  Pressing this button once will unlock the driver's door. The parking lamps will flash twice and the interior lamps will turn on. Press UNLOCK again within five seconds to unlock the remaining doors. The parking lamps will flash.

(Panic Alarm):  The remote keyless entry transmitter comes equipped with an instant panic alarm. To use the alarm, press the horn symbol when the ignition is turned off. The horn will sound and both the interior and exterior lamps will flash for up to thirty seconds. To stop the instant panic alarm, press the panic button again, wait for thirty seconds, or start the vehicle.

(Cargo Door):  Press this button to unlock the cargo doors only.

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.

Resynchronization

Resynchronization may be necessary due to the security method used by this system. The transmitter does not send the same signal twice to the receiver. The receiver will not respond to a signal that has been sent previously. This prevents anyone from recording and playing back the signal from the transmitter.

To resynchronize your transmitter, stand close to your vehicle and press and hold the LOCK and UNLOCK buttons on the transmitter at the same time for seven seconds. The door locks should cycle to confirm synchronization. If the locks do not cycle, see your dealer for service.

Battery Replacement

Under normal use, the battery in your remote keyless entry transmitter should last about four 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 keyless entry transmitter, do the following:


Object Number: 878805  Size: B3
  1. Use an object like a coin to pry open the transmitter.
  2. Once the transmitter is separated, use an object like a pencil to remove the old battery. Do not use a metal object.
  3. Remove and replace the battery, positive (+) side down.
  4. Snap the transmitter back together tightly to be sure no moisture can enter.
  5. Press and hold LOCK and UNLOCK on the remote keyless entry transmitter for seven seconds to resynchronize the transmitter.
  6. Check the operation of the transmitter.