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Installation Procedure

    Fig 1: View Of BCM & Rear Electrical Center
    GM684391Courtesy of GENERAL MOTORS CORP.
  1. Index the slots on the BCM (1) to the rear electrical center.
  2. Using a downward motion, install the BCM to the rear electrical center.
    3. Fig 2: Connecting BCM Connectors
    GM709161Courtesy of GENERAL MOTORS CORP.
  3. Connect the 24-way gray electrical connector (1) to the BCM.
  4. Connect the 32-way tan electrical connector (2) to the BCM.
    5. Fig 3: View Of Body Wiring Extension From BCM
    GM684396Courtesy of GENERAL MOTORS CORP.
  5. Connect the 40-way body wiring extension (1) to the BCM.
    6. Fig 4: Identifying Rear Electrical Center Locking Tab
    GM728745Courtesy of GENERAL MOTORS CORP.
  6. Engage the sliding latch fastening the BCM to the rear electrical center.

    Slide the latch outboard until the locking tab (1) is fully seated.

    7. Fig 5: View Of Rear Electrical Center Cover
    GM683548Courtesy of GENERAL MOTORS CORP.
  7. Install the rear electrical center cover.
  8. If replacing the BCM on a Chevrolet TrailBlazer or GMC Envoy, position the left hand second seat to a passenger position.
  9. If replacing the BCM on a GMC Envoy XL, install the left second row seat. Refer to Rear Seat Replacement .
  10. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  11. If installing a replacement BCM, program the BCM. Refer to Control Module References .
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