GM Service Manual Online
For 1990-2009 cars only

Important:  All transmitters which are to be recognized by the body control module (BCM) 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.

  1. Turn the ignition switch to the OFF position.
  2. Remove the RADIO (#17) fuse.
  3. While pressing the drivers door unlock switch, cycle the ignition switch from the OFF position to the RUN position 3 times within 5 seconds. The BCM will confirm entry into the programming mode by performing the following actions:
  4. 3.1. Locking both of the doors.
    3.2. Unlocking the drivers door.
    3.3. Releasing the rear compartment lid.
  5. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter for approximately 15 seconds. The BCM will confirm the programming of that transmitter by performing the following actions:
  6. 4.1. Locking both of the doors.
    4.2. Unlocking the drivers door.
    4.3. Releasing the rear compartment lid.
  7. Repeat the previous step to program up to 4 transmitters.
  8. Replace the RADIO (#17) fuse.
  9. Operate the transmitter functions in order to verify correct system operation.