Removal Procedure

Disable the SIR system. SIR Disabling and Enabling
Reposition the front center seat.
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Carefully pull the rear window lower garnish molding (1) forward around all edges then the middle of the part to disengage the clips from the sheet metal.
After all integral clips are disengaged, lift up and forward to clear the two rear end panel brackets that the rear window lower garnish molding (1) sits over.
Courtesy of GENERAL MOTORS COMPANY

NOTE:
Left side shown, right side similar.

Use a small flat bladed tool to open the trim panel bolt cap (1).
Body Lock Pillar Garnish Molding Bolt (2) - Remove
Starting at the top and working down with a trim tool, grasp the body lock pillar garnish molding (3) and gently pull the panel away from the body to release the retainers.
Body Lock Pillar Garnish Molding - Right Side (3) - Reposition
Courtesy of GENERAL MOTORS COMPANY

Disconnect the electrical connector.
Release the retaining tabs.
Remote Function Actuator Module (1) - Remove