Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Insert a small coin between the 2 halves of the transmitter case at the slot provided near the key ring hole.
Twist the coin in order to open the case.
Open the transmitter case.
Remove the battery (2).

Fig 1: Opening Transmitter Case

Courtesy of GENERAL MOTORS CORP.

Fig 2: Exploded View Of Transmitter Case

Courtesy of GENERAL MOTORS CORP.