Installation Procedure

Install the battery (2) with the positive (+) side down.
Use one 3 V CR2032 battery (or the equivalent).
Close the transmitter case (6, 4).

Fig 1: Installing Transmitter Battery (Positive (+) Side Down)
Courtesy of GENERAL MOTORS CORP.
Ensure the seal is in position. Align the 2 halves of the case and snap the two halves together.
Synchronize the transmitter. Refer to TRANSMITTER SYNCHRONIZATION .
Replace the batteries when the range of the transmitter decreases to less than 7 m (23 ft).

Fig 2: View Of Keyless Entry Transmitter
Courtesy of GENERAL MOTORS CORP.