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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 735 (Wiring Systems (General Information)) >> Repair Instructions >> Underhood Electrical Center or Junction Block Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. With the electrical center turned upside down, install the electrical center box into the electrical center.
  2. Connect the forward lamp wiring harness connector to the junction block.
    Fig 1: Installing Electrical Center Box
    G01779477Courtesy of GENERAL MOTORS CORP.
  3. Connect the IP wiring harness connector to the junction block.
    Fig 2: Connecting IP Wiring Harness Connector
    G01779478Courtesy of GENERAL MOTORS CORP.
  4. Connect the engine wiring harness connector to the junction block.
    CAUTION: Refer to FASTENER NOTICE .
  5. Install the bolts retaining the engine, IP, and forward lamp wiring harness connectors to the junction block.

    Tighten 

    Tighten the electrical center junction block bolts to 7 N.m (62 lb in).

    Fig 3: Connecting Engine Wiring Harness Connector
    G01779479Courtesy of GENERAL MOTORS CORP.
  6. Connect the instrument panel (IP) wiring harness individual connectors to the junction block.
    Fig 4: Connecting IP Wiring Harness Individual Connectors
    G01779480Courtesy of GENERAL MOTORS CORP.
  7. Connect the retainers for the electrical cable at the rear of the electrical center.
  8. Install the box retainers by the electrical cables.
    Fig 5: Connecting Electrical Cable Retainers
    G01779481Courtesy of GENERAL MOTORS CORP.
  9. Close the lower cover of the electrical center.
  10. Turn the electrical center right side up.
  11. Attach the box retainer next to the electrical cables.
  12. Connect the electrical cable retainers at the rear of the electrical center.
    Fig 6: Closing Electrical Center Lower Cover
    G01779482Courtesy of GENERAL MOTORS CORP.
  13. Slide the electrical center to the rear until the center snaps into the retainer tab.
    Fig 7: Installing Electrical Center Retainer Tab
    G01779483Courtesy of GENERAL MOTORS CORP.
  14. Install all of the fuses and the relays.
  15. Install the electrical center cover.
  16. Install the positive battery cable lead to the stud on underhood electrical center, then install the positive battery cable lead retaining nut.

    Tighten 

    Tighten the positive battery cable lead retaining nut to 10 N.m (89 lb in).

  17. Install the air cleaner assembly.
    Fig 8: Installing Fuses & Relays
    G01779484Courtesy of GENERAL MOTORS CORP.
  18. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PRO in Engine Electrical.
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