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Home >> GMC >> 2021 >> Yukon AT4 >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Repair Instructions >> Windshield Wiper System Module Replacement >> Installation Procedure

Installation Procedure

  1. GM5537717Courtesy of GENERAL MOTORS COMPANY

    Connect the electrical connector to the windshield wiper system module until the lock engages fully.

  2. Pull back lightly on the electrical connector to ensure the lock is engaged.
  3. Install the windshield wiper system module (2) in the vehicle.
  4. CAUTION:

    Refer to Fastener Caution .

  5. Windshield Wiper System Module Bolt (1) - Install and tighten [ 2x ] - Fastener Specifications 
  6. Install the retainers.
  7. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (KL9)
  8. GM5537718Courtesy of GENERAL MOTORS COMPANY

    Windshield Wiper System Module Shield (1) - Install

  9. GM5531724Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Grille Panel (2) - Install

  10. Windshield Washer Nozzle Hose - Install [ 3x ]
  11. Air Inlet Grille Panel Retainer (1) - Install [ 8x ]
  12. GM5532143Courtesy of GENERAL MOTORS COMPANY

    Hood Rear Outer Air Inlet Seal (2) - Install [ 2x ]

  13. Hood Rear Outer Air Inlet Seal Retainers (1) - Install [ 2x ]
  14. GM5523134Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Grille Panel Extension (1) - Install [ 2x ]

  15. Remove the double layer of masking tape around the perimeter of the painted surfaces.
  16. Using a 50/50 mixture of isopropyl alcohol and clean drinkable water with a clean towel, remove any left over adhesive residue from the masking tape.
  17. GM5522078Courtesy of GENERAL MOTORS COMPANY

    Clean the left and right side windshield wiper transmission pivot shaft splines with a soft wire brush before installing the windshield wiper arm (3).

  18. Position the windshield wiper arm (3) on the windshield wiper transmission pivot shaft.
  19. Windshield Wiper Arm Nut (2) - Install and tighten - Fastener Specifications 
  20. Windshield Wiper Arm Finish Cap (1) - Install [ 2x ]
  21. GM5532162Courtesy of GENERAL MOTORS COMPANY

    If required, realign the windshield wipers to their respective alignment circles (1) on the windshield.

  22. Lubricate the windshield with clean washer fluid.
  23. Run the windshield wipers for two complete cycles then turn off the windshield wipers.
  24. Ensure the windshield wipers are in the full park position.