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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1510 (Wiring Systems - Specifications, Component Views And Connector End Views) >> Repair Instructions >> Underhood Electrical Center or Junction Block Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
    2. Fig 1: Cable Lead To Junction Block
    GM821475Courtesy of GENERAL MOTORS CORP.
  2. Remove the positive battery cable lead nut from the junction block. Reposition the cable lead away from the junction block.
  3. Remove the junction block cover.
    4. Fig 2: IP Wiring Harness Connector To Junction Block
    GM821474Courtesy of GENERAL MOTORS CORP.
  4. Disengage the electrical cable retainers at the rear of the junction block.
  5. Turn the junction block upside down and open the lower cover.
  6. Loosen the bolts retaining the engine, IP, and forward lamp wiring harness connectors to the junction block.
  7. Disconnect the engine wiring harness connector from the junction block.
  8. Disconnect the IP wiring harness connector from the junction block.
  9. Remove the junction block.
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