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Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the battery negative cable.
  2. If replacing the rear electrical center on a Chevrolet TrailBlazer EXT or GMC Envoy XL, remove the left second row seat. Refer to Seat Replacement - Rear No. 1 (TrailBlazer EXT, Envoy XL, Envoy XUV) in Seats.
    3. Fig 1: View Of Rear Electrical Center Cover
    GM683548Courtesy of GENERAL MOTORS CORP.
  3. If replacing the rear electrical center on a Chevrolet TrailBlazer, GMC Envoy or Oldsmobile Bravada, position the left second row seat to a cargo position.
  4. Remove the rear electrical center cover.
    5. Fig 2: Locating Battery Feed Terminal Nut
    GM684302Courtesy of GENERAL MOTORS CORP.
  5. Remove the battery feed terminal nut (2) from the junction block.
  6. Remove the body control module (BCM) from the rear electrical center. Refer to Body Control Module Replacement in Body Control System.
  7. Fully loosen the 3 bolts (1) that retain the junction block to the electrical connectors.
    8. Fig 3: Removing/Installing Junction Block At Block Base
    GM684301Courtesy of GENERAL MOTORS CORP.
  8. Release the tabs that retain the junction block to the block base.
  9. Remove the junction block from the block base.
    10. Fig 4: Identifying Instrument Panel Harness Connector
    GM684296Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the instrument panel harness connector (1) from the junction block.
    11. Fig 5: Identifying Mobile Telephone Harness Connector
    GM684303Courtesy of GENERAL MOTORS CORP.
  11. Disconnect the mobile telephone harness connector (1) from the junction block.
    12. Fig 6: Identifying Body Wiring Harness Connector & Headliner Harness Connector
    GM684293Courtesy of GENERAL MOTORS CORP.
  12. Disconnect the body wiring harness connector (1) from the junction block.
  13. Disconnect the headliner harness connector (2) from the junction block.
  14. Disconnect the console harness connector from the junction block.
  15. Remove the block base retaining nuts from the floor studs.
  16. Remove the block base from the floor panel.
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