Removal Procedure

Remove the fasteners (1) at the rear edge of the insulators in order to disengage the fasteners from the lower IP.
Push in on the snap tab retainers in order to release the insulator.

Fig 1: Removing Fasteners & Closeout/Insulator Panel Replacement - Left (LHD)
Courtesy of GENERAL MOTORS CORP.
Disconnect the electrical connectors (1, 3) as necessary.

Fig 2: Disconnecting Electrical Connectors & Insulator Closeout/Insulator Panel Replacement - Left (LHD)
Courtesy of GENERAL MOTORS CORP.
Slide the insulator panel (2) rearward toward the vehicle in order to clear the emergency brake bracket (1).

Fig 3: Removing Insulator, Park Brake Bracket & Insulator Closeout/Insulator Panel Replacement - Left (LHD)
Courtesy of GENERAL MOTORS CORP.