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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 170 (Wiring Systems - Testing, Diagnosis & Repair) >> Repair Instructions >> Underhood Electrical Center or Junction Block Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Open and support the hood.
  2. Disconnect the negative battery cable. Refer to BATTERY DISCONNECT CAUTION .
  3. Fig 1: Removing/Installing Covers
    GM1506794Courtesy of GENERAL MOTORS CORP.
  4. Remove the cover (1) from the base (6) of the accessory wiring junction block assembly.
  5. Fig 2: Removing/Installing Battery Cable
    GM1506811Courtesy of GENERAL MOTORS CORP.
  6. Remove the positive battery cable nut (3) and disconnect the cable (2) from the positive terminal stud.
  7. Fig 3: Inspecting Outer Locking Tabs
    GM1536795Courtesy of GENERAL MOTORS CORP.
  8. Release the 2 locking tabs from the base side as indicated by the arrows of the electrical center (1), as shown.
  9. Fig 4: Removing/Installing Underhood Accessory Wiring Junction Block Assembly
    GM1536796Courtesy of GENERAL MOTORS CORP.
  10. Carefully lift at each side of the underhood accessory wiring junction block assembly in order to release the underhood accessory wiring junction block assembly from the 3 main body harness connectors (1) and exposing the lower connectors.
  11. Remove the underhood accessory wiring junction block assembly from the vehicle.
  12. Fig 5: Restaging Harness Connectors
    GM1536798Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Using a hook-type tool, as shown, re-stage all 3 lower harness connectors into the lower base prior to installing the new underhood accessory wiring junction block assembly.
  13. Use the hook tool to pull the connector (1) upward in order to secure the connectors into the base.