GM Service Manual Online
For 1990-2009 cars only

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. 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.

The RCDLR may be personalized in order to chirp the horns when the vehicle is locked using a transmitter. In order to enable the horn chip, turn the ignition OFF prior to performing the transmitter programming. In order to disable the horn chirp, turn the ignition ON prior to performing the transmitter programming.

Perform the following in order to program the transmitter(s):

  1. Connect a jumper wire between the keyless entry program enable circuit of the data link connector (DLC) and a good ground. The doors will lock and unlock in order to confirm that the remote control door lock receiver has entered the transmitter programming mode.
  2. Press and hold the LOCK button and the UNLOCK button simultaneously on 1 transmitter. After a delay of approximately 10 seconds, the doors will lock and unlock in order to confirm the programming of that transmitter.
  3. Repeat the previous step to program up to 4 transmitters.
  4. Remove the jumper wire from the DLC.
  5. Operate the transmitter functions in order to verify correct system operation.