Removal Procedure

WARNING: This page is about a different car, the 2003 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Remove the rear shelf panel. Refer to SHELF CARRIER REPLACEMENT -- REAR in Interior Trim.
Disconnect the navigation processor electrical connector (1).
Disconnect the coaxial cables from the navigation processor.

Fig 1: Disconnecting Navigation Processor Electrical Connector
Courtesy of GENERAL MOTORS CORP.
Remove the nuts (2) securing the navigation processor (1) to the rear shelf.
Remove the navigation processor (1) from the rear shelf.

Fig 2: Removing Nuts Securing Navigation Processor To Rear Shelf
Courtesy of GENERAL MOTORS CORP.