Removal (Vehicle Communication Interface Unit)

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Remove TRUNK TRIM PANELS. See TRUNK TRIM PANELS .
Disconnect antenna (2) and harness connectors (3) from VCIM (4). See Fig 1.
Remove VCIU (4) by lifting retainer tabs (1). Remove VCIM (4).

Fig 1: Removing Vehicle Communication Interface Module

Courtesy of GENERAL MOTORS CORP.