Removal Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Fold and tumble the right rear seat to a cargo position.
Leaving the electrical connectors attached, remove the communication interface module from the vehicle communication interface module (VCIM) bracket. Refer to COMMUNICATION INTERFACE MODULE REPLACEMENT (TRAILBLAZER, ENVOY, BRAVADA) or COMMUNICATION INTERFACE MODULE REPLACEMENT (TRAILBLAZER EXT, ENVOY XL) in Interior Trim.
Using a flat bladed tool, release the retaining tab (1) on the VCIM bracket.
Slide the VCIM bracket rearward until the retaining tabs are released from the seat bracket.
Remove the VCIM bracket from vehicle.
Slide the VCIM bracket rearward until the retaining tabs are released from the seat bracket.
Remove the VCIM bracket from vehicle.

Fig 1: Releasing Retaining Tab On VCIM Bracket
Courtesy of GENERAL MOTORS CORP.

Fig 2: Removing VCIM Bracket From Vehicle
Courtesy of GENERAL MOTORS CORP.