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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 872 (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 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Align the electrical connectors to there slots in the underhood accessory wiring junction block bracket.
    Fig 1: Installing Relay In Underhood Junction Box
    G01522468Courtesy of GENERAL MOTORS CORP.
  2. Install the underhood accessory wiring junction block.
    1. Align the underhood accessory wiring junction block (3) onto the electrical connectors.
    2. Hand tighten the harness retaining bolts (1).
    3. Secure the four underhood accessory wiring junction block retaining clips (2).

      Tighten 

      Tighten the underhood accessory wiring junction block harness retaining bolts (1) to 4 N.m (36 lb in).

    Fig 2: Installing Underhood Junction Block Bolts
    G01522469Courtesy of GENERAL MOTORS CORP.
  3. Connect the positive battery cable (2).
  4. Install the positive battery cable nut (1).

    Tighten 

    Tighten the positive battery cable nut (1) to 16 N.m (12 lb ft).

    Fig 3: Connecting Positive Terminal Cable
    G01522470Courtesy of GENERAL MOTORS CORP.
  5. Install the underhood accessory wiring junction block cover (2).
  6. Secure the retaining tabs (1).
  7. Connect the negative battery cable.
    Fig 4: Installing Junction Box Cover
    G01522471Courtesy of GENERAL MOTORS CORP.
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