Installation Procedure

Install the GPS antenna module (2) to the rear shelf trim panel.
Install the pushpins (1) in order to retain the antenna module to the rear shelf trim panel.
Push the center of the pin down in order to lock the pins (1) in place.

Fig 1: View of GPS Antenna Module

Courtesy of GENERAL MOTORS CORP.

Install the GPS antenna wiring harness to the rear shelf trim panel in order to retain the wiring harness to the rear shelf trim panel.
Install the rear shelf trim panel. Refer to Trim Panel Replacement - Rear Window Shelf in Interior Trim.