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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 2021 (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 2001 Chevrolet Monte Carlo and 2001 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable.
  2. Disconnect the positive battery cables from the underhood fuse block terminals.
  3. Remove the tape from the wiring harness at the base of the underhood fuse block base.
    Fig 1: Underhood Fuse Block
    G01737766Courtesy of GENERAL MOTORS CORP.
  4. Release the underhood fuse block(s) clip retainers using a small flat-bladed tool.
    Fig 2: Underhood Fuse Block Clip Retainer
    G01737767Courtesy of GENERAL MOTORS CORP.
  5. Remove the fuse block(s) and wiring harness lifting up from the base and reposition from the base.
    Fig 3: Underhood Fuse Block
    G01737768Courtesy of GENERAL MOTORS CORP.
  6. Remove the nuts from the underhood fuse block base.
  7. Remove the underhood fuse block base from the shock tower.
  8. Remove the underhood fuse block lower front terminal positive assurance retainers using a small flat-bladed tool.
    Fig 4: Underhood Fuse Block Lower Front Terminal Positive Assurance Retainers
    G01737770Courtesy of GENERAL MOTORS CORP.
  9. Remove the plastic shields from the battery cable and buss bar terminals, using a small flat-bladed tool to release the clip retainer.
    Fig 5: Releasing Clip Retainer
    G01737771Courtesy of GENERAL MOTORS CORP.
  10. Remove the bolts from the buss bar jumper bar.
    Fig 6: Buss Bar Jumper Bar
    G01737772Courtesy of GENERAL MOTORS CORP.
  11. Remove the buss bar jumper bar from the fuse block(s).
  12. Remove the fuses from the fuse block(s) to access the buss bar terminal release tabs.
  13. Remove the buss bar(s) from the fuse block(s) using a terminal releasing tool, and pulling down and out on the buss bar.
    Fig 7: Buss Bar Terminal Release Tabs
    G01737775Courtesy of GENERAL MOTORS CORP.
  14. Remove the buss bar(s) from the fuse block(s).
    Fig 8: Buss Bar(s) And Fuse Block
    G01737776Courtesy of GENERAL MOTORS CORP.
  15. Release the clip retainers from the underhood fuse block(s) battery cable and buss bar terminals using a small flat-bladed tool.
    Fig 9: Clip Retainers
    G01737777Courtesy of GENERAL MOTORS CORP.
  16. Remove the underhood fuse block(s) battery cable and buss bar terminals from the fuse block by pulling down.
  17. Remove the fuse block and lamp wiring harness from the vehicle, if required.
    Fig 10: Fuse Block And Lamp Wiring Harness
    G01737778Courtesy of GENERAL MOTORS CORP.
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