Removal Procedure

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NOTE:
Left side shown, right side similar.

Quarter Window Trim Finish Panel Bolt Cap- Right Side (1) - Remove
Body Rear Corner Upper Garnish Molding Bolt- Right Side (2) - Remove
Body Rear Corner Upper Garnish Molding- Right Side (3) - Remove
Courtesy of GENERAL MOTORS COMPANY

Lower the headlining trim panel (1) as necessary to access the communication interface module.
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Disconnect the electrical connector.
Release the retaining tabs.
Communication Interface Module (1) - Remove
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Communication Interface Module Bracket Bolt (1) - Remove [2x]
Communication Interface Module Bracket (2) - Remove