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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 645 (Wiring Systems (General Information)) >> Repair Instructions >> Underhood Electrical Center or Junction Block Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. 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 PRO .
  2. Remove the cover from the underhood fuse block.
  3. Disconnect the positive battery cables fastener (1) from the underhood fuse block.
  4. Disconnect the wiring harness clip from the accumulator cover and position the cables out of the way.
    Fig 1: Locating Positive Battery Cables Fastener
    G01802751Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the retaining clip securing the evaporator hose to the accumulator cover.
  6. Carefully position the evaporator hose out of the way.
    Fig 2: Disconnect Evaporator Hose To Accumulator Cover Retaining Clip
    G01802752Courtesy of GENERAL MOTORS CORP.
  7. Remove the accumulator cover.
    Fig 3: Removing Accumulator Cover
    G01802753Courtesy of GENERAL MOTORS CORP.
  8. Loosen the fasteners retaining the underhood fuse block connectors.
  9. Disconnect the 4 cam lock connectors from the underhood fuse block and lift the assembly up from the base.
    Fig 4: Removing Underhood Fuse Block
    G01802754Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the engine harness connector and remove the underhood fuse block from the vehicle.
    Fig 5: Disconnecting Engine Harness Connector
    G01802755Courtesy of GENERAL MOTORS CORP.
  11. Remove the underhood fuse block base fasteners.
  12. Remove the underhood fuse block base assembly.
    Fig 6: Removing Underhood Fuse Block Base Fasteners
    G01802756Courtesy of GENERAL MOTORS CORP.
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