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Home >> Buick >> 2023 >> Envision Preferred, AWD >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Starting System And Charging System - Repair Instructions >> Repair Instructions >> Engine Wiring Harness Junction Block Replacement >> Removal Procedure

Removal Procedure

  1. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection 
  2. GM5060168Courtesy of GENERAL MOTORS COMPANY

    Retaining Tab (1) - Disengage [2x]

  3. Fuse Block Cover (2) - Remove
  4. GM5060646Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect [3x]

  5. Battery Positive Cable Nut (3) @Engine Wiring Harness Junction Block - Remove
  6. Battery Positive Junction Block Cable (2) - Remove
  7. GM5060654Courtesy of GENERAL MOTORS COMPANY

    Retaining Tab (1) - Disengage [2x]

  8. Engine Wiring Harness Junction Block Cover (2) - Remove
  9. GM4279613Courtesy of GENERAL MOTORS COMPANY

    Release the 4 retainer tabs using a suitable hook-like tool to release the locking levers.

  10. Rotate the locking levers upwards, to release the engine wiring harness junction block (1) from the electrical connectors.