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Home >> GMC >> 2021 >> Yukon XL AT4 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 5.3L (L84) Or 6.2L (L87) - Repair Instructions (10 Of 12) >> Repair Instructions >> Belt Idler Pulley Replacement >> Installation Procedure

Installation Procedure

  1. GM4997614Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Belt Idler Pulley (1) - Install and tighten - Fastener Specifications

  2. GM5523120Courtesy of GENERAL MOTORS COMPANY

    Position the accessory drive primary belt (4) on the belt idler pulley (2), fan and water pump pulley (3) and generator (1).

  3. GM5115929Courtesy of GENERAL MOTORS COMPANY

    Install EN-51767-2  Universal Stretchy Belt Installer (1) onto the crankshaft balancer.

  4. GM5115932Courtesy of GENERAL MOTORS COMPANY

    Position the accessory drive primary belt (2) on the crankshaft balancer.

  5. Slowly rotate the crankshaft balancer in a clockwise direction until the accessory drive primary belt (2) fully seats on the crankshaft balancer.
  6. Remove EN-51767-2  Universal Stretchy Belt Installer (1) from the crankshaft balancer.
  7. GM5115452Courtesy of GENERAL MOTORS COMPANY

    Inspect the accessory drive primary belt (1) for proper installation and alignment.

  8. GM5115454Courtesy of GENERAL MOTORS COMPANY

    Rotate the crankshaft balancer (1) and additional 360 degrees to ensure proper accessory drive primary belt installation.

  9. GM5551440Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct (3) - Install

    10. CAUTION:

    Refer to Fastener Caution .

  10. Air Cleaner Outlet Duct Clamp (2) - Tighten [ 2x ] - Fastener Specifications
  11. Positive Crankcase Ventilation Fresh Air Tube (1) - Connect - Plastic Collar Quick Connect Fitting Service
  12. GM5001375Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct Bracket Bolt (1) - Install and tighten - Fastener Specifications

  13. Install engine wiring harness to air cleaner outlet duct bracket.
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