Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Index the slots on the BCM (1) to the rear electrical center.

Fig 1: Removing/Installing BCM In Rear Electrical Center
Courtesy of GENERAL MOTORS CORP.
Using a downward motion, install the BCM to the rear electrical center.
Connect the 24-way gray electrical connector (1) to the BCM.

Fig 2: Disconnecting/Connecting BCM Connectors
Courtesy of GENERAL MOTORS CORP.
Connect the 32-way tan electrical connector (2) to the BCM.
Connect the 40-way body wiring extension (1) to the BCM.

Fig 3: Wiring Extension & BCM
Courtesy of GENERAL MOTORS CORP.
Engage the sliding latch fastening the BCM to the rear electrical center.
Slide the latch outboard until the locking tab (1) is fully seated.

Fig 4: Identifying Rear Electrical Center Locking Tab
Courtesy of GENERAL MOTORS CORP.
Install the rear electrical center cover.

Fig 5: View Of Rear Electrical Center Cover
Courtesy of GENERAL MOTORS CORP.
If replacing the BCM on a Chevrolet TrailBlazer, GMC Envoy or Oldsmobile Bravada, position the left hand second seat to a passenger position.
If replacing the BCM on a Chevrolet TrailBlazer EXT or GMC Envoy XL, install the left second row seat. Refer to SEAT BACK REPLACEMENT - REAR NO. 1 (TRAILBLAZER EXT, ENVOY XL) in Seats.
Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE in Engine Electrical.
If installing a replacement BCM, program the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration .