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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 658 (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 Buick Regal and 2002 Buick Century. 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 junction block retainer to strut tower nut. Tighten the underhood accessory wiring junction block retainer to strut tower 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: Identifying Junction Block Retainer
    G01754677Courtesy of GENERAL MOTORS CORP.
  2. Connect the forward lamp wiring harness connector to the junction block.
    Fig 2: Identifying Forward Lamp Wiring Harness Connector
    G01754678Courtesy of GENERAL MOTORS CORP.
  3. Connect the IP wiring harness connector to the junction block.
    Fig 3: Identifying IP Wiring Harness Connector
    G01754679Courtesy of GENERAL MOTORS CORP.
  4. Connect the engine wiring harness connector to the junction block.
    5. Fig 4: Identifying Engine Wiring Harness Connector
    G01754680Courtesy of GENERAL MOTORS CORP.
  5. Tighten the bolts retaining the engine, IP and forward lamp wiring harness connectors to the junction block. Tighten the wiring harness connectors to underhood accessory wiring junction block retaining bolts to 7 N.m (62 lb in).
  6. Connect the IP wiring harness individual connectors to the junction block.
    Fig 5: Identifying Instrument Panel (IP) Wiring Harness Individual Connectors
    G01754681Courtesy of GENERAL MOTORS CORP.
  7. Position the wiring harness 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. Fig 6: Identifying Junction Block-To-Junction Block Retainer Tabs
    G01754682Courtesy of GENERAL MOTORS CORP.
  8. Secure the coolant recovery tank hose retainer to the junction block.
  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 the positive battery cable lead to underhood accessory wiring junction block retaining nut to 10 N.m (89 lb in).
  10. Install the remote positive battery cable stud cover.
    11. Fig 7: Identifying Remote Positive Battery Cable Stud Cover
    G01754683Courtesy of GENERAL MOTORS CORP.
  11. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .
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