GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Perform the following steps in order to open the transmitter case:


    Object Number: 621564  Size: SH
  1. Insert a small flat-bladded tool between the 2 halves of the transmitter case at the slot provided near the key ring hole.

  2. Object Number: 621566  Size: SH
  3. Twist the tool in order to open the case.
  4. Remove the battery.

Installation Procedure


    Object Number: 621566  Size: SH
  1. Install the battery with the positive (+) side facing down.
  2. Ensure the transmitter case seal is in the proper position.
  3. Align the 2 halves of the transmitter case.
  4. Snap the 2 halves of the transmitter case together.
  5. Important: Normal battery life is approximately 2 years. Replace the batteries when the range of the transmitter begins to decrease significantly to less than approximately 3 m (23 ft).

  6. Test the operation of the transmitter.