GM Service Manual Online
For 1990-2009 cars only

Transmitter Programming

Important:  All transmitters which are to be recognized by the remote control door lock receiver (RCDLR) must be programmed in a single programming sequence. If the system is placed in program mode, it will erase all previously programmed transmitters upon the receipt of the programming signal from the first transmitter. Up to 4 transmitters can be programmed to a single vehicle. Do not operate or program the transmitters in the vicinity of other vehicles that are in the keyless entry program mode. This prevents the programming of the transmitters to the incorrect vehicle.

  1. Connect a jumper wire between the keyless entry program enable signal circuit terminal 8 at the data link connector and ground.
  2. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a delay of approximately 10 seconds, the doors will lock and unlock to confirm the programming of that transmitter.
  3. Important: Program additional transmitters within 1 minute of the previously programmed transmitter.

  4. Press and hold any button on the next transmitter to be programmed within 1 minute of the previously programmed transmitter. After a delay of approximately 2 seconds, the doors will lock and unlock to confirm the programming of that transmitter.
  5. Repeat the previous step to program up to 4 transmitters.
  6. Remove the jumper wire from the data link connector in order to exit the keyless entry transmitter mode.
  7. Operate the transmitter functions in order to verify proper system operation.

Transmitter Resynchronization

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

To resynchronize a transmitter, stand close to the vehicle and simultaneously press and hold the LOCK and UNLOCK buttons on the transmitter for at least five seconds. The door locks will cycle to confirm resynchronization.