Removal Procedure

Place the remote control door lock receiver transmitter face down on a clean surface.
Insert a small screwdriver into the slot on the bottom of the transmitter.
Carefully turn the screwdriver in the slot until the cover releases.

Fig 1: Turning Screwdriver In Slot
Courtesy of GENERAL MOTORS CORP.
Remove the cover while being careful not to damage the seal.
Remove the battery from the transmitter.

Fig 2: Removing battery from the transmitter
Courtesy of GENERAL MOTORS CORP.