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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 >> Removing Procedure

Removing 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. Disconnect the negative battery cable.
  2. Remove the underhood accessory wiring junction block cover.
    1. Release the retaining tabs (1).
    2. Remove the underhood accessory wiring junction block cover (2).
    Fig 1: Removing Junction Block Cover
    G01522465Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the positive battery cable.
    1. Remove the nut (1).
    2. Position the positive battery cable (2) aside.
    Fig 2: Disconnecting Battery Positive Terminal
    G01522466Courtesy of GENERAL MOTORS CORP.
  4. Remove the underhood accessory wiring junction block.
    1. Loosen the wiring harness retaining bolts (1).
    2. Release the four underhood accessory wiring junction block retaining clips (2).
    3. Lift the underhood accessory wiring junction block (3) out of the mounting bracket.
    4. Disconnect the electrical connectors.
    5. Remove the underhood accessory wiring junction block (3).
    Fig 3: Removing Relay From Underhood Junction Box
    G01522467Courtesy of GENERAL MOTORS CORP.
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