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Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Wiring Systems) >> Repair Instructions >> Underhood Electrical Center or Junction Block Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  2. Lift the cover of the under hood Bussed Electrical Center (BEC) (2) to access the positive cable nut.
  3. Remove the positive battery cable nut and position the cable (1) away from the BEC.
  4. Fig 1: Bussed Electrical Center & Positive Battery Cable Nut
    GM1233267Courtesy of GENERAL MOTORS CORP.
  5. Release the tabs and pull the BEC from the housing.
  6. Fig 2: Tabs & Bussed Electrical Center
    GM1233269Courtesy of GENERAL MOTORS CORP.
  7. Loosen the bolts (1) retaining the engine, IP and forward lamp wiring harness connectors to the junction block.
  8. Fig 3: Retaining Bolts Of Engine, I/P & Forward Lamp Wiring Harness Connectors
    GM1233270Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the wiring harness connectors from the junction block.
  10. Fig 4: Wiring Harness Connectors & Junction Block
    GM1233272Courtesy of GENERAL MOTORS CORP.
  11. If the BEC housing removal is necessary, perform the following:
    1. Remove the nuts (2) from the BEC housing (1).
    2. Lift the BEC housing to release the lower tab from the strut tower.
    3. Remove the BEC housing (1) from the vehicle.
  12. Fig 5: BEC Housing & Nuts
    GM1233274Courtesy of GENERAL MOTORS CORP.