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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1223 (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 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Refer to FASTENER NOTICE .
  1. If accessory wiring junction block retainer installation is necessary, perform the following:
    1. 1.1. Position the junction block retainer to the strut tower and insert the lower tab on the retainer to the slot on the tower
    2. 1.2. Install the nut which secures the junction block retainer to the strut tower

      Tighten 

      Tighten the nut to 3 N.m (27 lb in)

    3. 1.3. Position the positive battery cable lead end through the slot in the junction block retainer, then secure the cable retainers
    Fig 1: Accessory Wiring Junction Block Retainer
    G01615926Courtesy of GENERAL MOTORS CORP.
  2. Connect the forward lamp wiring harness connector to the junction block
    Fig 2: Forward Lamp Wiring Harness Connector
    G01615927Courtesy of GENERAL MOTORS CORP.
  3. Connect the IP wiring harness connector to the junction block
    Fig 3: I/P Wiring Harness Connector
    G01615928Courtesy of GENERAL MOTORS CORP.
  4. Connect the engine wiring harness connector to the junction block
  5. Tighten the bolts retaining the engine, IP and forward lamp wiring harness connectors to the junction block

    Tighten 

    Tighten the bolts to 7 N.m (62 lb in)

    Fig 4: Engine Wiring Harness Connector
    G01615929Courtesy of GENERAL MOTORS CORP.
  6. Connect the IP wiring harness individual connectors to the junction block
    Fig 5: I/P Wiring Harness Individual Connectors
    G01615930Courtesy of GENERAL MOTORS CORP.
  7. Position the wiring harnesses and the accessory wiring junction block to the junction block retainer, align the four retaining tabs and press into place to secure the junction block
  8. Secure the coolant recovery tank hose retainer to the junction block
    Fig 6: Accessory Wiring Junction Block
    G01615931Courtesy of GENERAL MOTORS CORP.
  9. Install the positive battery cable lead to the stud on the underhood accessory wiring junction block, then install the cable lead retaining nut

    Tighten 

    Tighten the nut to 10 N.m (89 lb in)

  10. Install the remote positive battery cable stud cover
  11. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .
    Fig 7: Positive Battery Cable Stud Cover
    G01615932Courtesy of GENERAL MOTORS CORP.
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