Installation 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.

Index the slots on the BCM (1) to the rear electrical center.
Using a downward motion, install the BCM to the rear electrical center.

Fig 1: Installing BCM To Rear Electrical Center
Courtesy of GENERAL MOTORS CORP.
Connect the 24-way gray electrical connector (1) to the BCM.
Connect the 32-way tan electrical connector (2) to the BCM.

Fig 2: Connecting 32-Way Tan Electrical Connector To BCM
Courtesy of GENERAL MOTORS CORP.
Connect the 40-way body wiring extension (1) to the BCM.

Fig 3: Connecting 40-Way Body Wiring Extension To The 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: Sliding Latch Outboard Until Locking Tab Is Fully Seated
Courtesy of GENERAL MOTORS CORP.
Install the rear electrical center cover.
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 SYSTEM 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 .

Fig 5: Installing Rear Electrical Center Cover
Courtesy of GENERAL MOTORS CORP.