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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 >> Engine Mount Replacement - Right Side >> Installation Procedure

Installation Procedure

  1. GM5035320Courtesy of GENERAL MOTORS COMPANY

    Engine Mount- Right Side (1) - Install

  2. GM5035238Courtesy of GENERAL MOTORS COMPANY

    Prepare the 4 engine mount engine side bolts (1) for installation as follows:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  3. Engine Mount Engine Side Bolt- Right Side (1) - Install and hand tighten [ 4x ]
    4. CAUTION:

    Refer to Fastener Caution .

  4. Engine Mount Engine Side Bolt- Right Side (1) - Tighten [ 4x ] - Fastener Specifications
  5. Lower the engine.
  6. GM5033661Courtesy of GENERAL MOTORS COMPANY

    Prepare the 3 engine mount frame side bolts (1) for installation as follows:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  7. Engine Mount Frame Side Bolt- Right Side (1) - Install and hand tighten [ 3x ]
  8. Engine Mount Frame Side Bolt- Right Side (1) - Tighten in sequence [ 3x ] - Fastener Specifications
  9. GM5034854Courtesy of GENERAL MOTORS COMPANY

    Remove the EN-51768  Engine Support Fixture Adaptor Bolt - M8 and EN-36857  Engine Lift Bracket (1) from the front of the right side cylinder head.

  10. GM5001113Courtesy of GENERAL MOTORS COMPANY

    Exhaust System Seal (1) - Install NEW

  11. GM4992392Courtesy of GENERAL MOTORS COMPANY

    Exhaust Manifold Gasket- Right Side (2) - Install NEW

  12. Install the right side exhaust manifold (1) through the wheel opening.
  13. GM4992369Courtesy of GENERAL MOTORS COMPANY

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  14. Exhaust Manifold Bolt- Right Side (1) - Install NEW and tighten in sequence [ 5x ] - Fastener Specifications
  15. GM5541819Courtesy of GENERAL MOTORS COMPANY

    Inspect the inside of the 4 spark plug rubber boots for a thin, even coat of grease. If there is no grease present or additional grease is necessary, apply a thin coating of dielectric grease evenly to the inside of the 4 spark plug rubber boots up to a depth of 15 mm from the end of the boot. Adhesives, Fluids, Lubricants, and Sealers

  16. Push the boot of the 4 spark plug wires (1) onto the 4 gas engine ignition spark plugs (2) until 2 audible clicks are heard.
  17. GM5584486Courtesy of GENERAL MOTORS COMPANY

    Exhaust Front Pipe Nut- Right Side (1) - Install and tighten [ 3x ] - Fastener Specifications

  18. GM5568855Courtesy of GENERAL MOTORS COMPANY

    Connect the heated oxygen sensor electrical connector.

  19. GM5508826Courtesy of GENERAL MOTORS COMPANY

    Exhaust Front Pipe Heat Shield- Right Side (2) - Install

  20. Exhaust Heat Shield Bolt (1) - Install and tighten - Fastener Specifications
  21. GM4992288Courtesy of GENERAL MOTORS COMPANY

    Install the right exhaust manifold heat shield (1) through the wheel opening.

  22. GM4992215Courtesy of GENERAL MOTORS COMPANY

    Exhaust Manifold Heat Shield Bolt- Right Side (1) - Install and tighten [ 3x ] - Fastener Specifications

  23. Wiring Harness - Reposition
  24. GM5535978Courtesy of GENERAL MOTORS COMPANY

    Oil Level Indicator Seal (2) - Install NEW

  25. Lubricate the NEW oil level indicator seal (2) with clean engine oil. Adhesives, Fluids, Lubricants, and Sealers
  26. Oil Level Indicator Tube (1) @ Oil Pan - Install
  27. GM5535977Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness (3) - Install

  28. Engine Wiring Harness Retainer (1) @ Oil Level Indicator Tube (2) - Connect
  29. Front Wheelhouse Liner- Right Side - Install - Front Wheelhouse Liner Replacement
  30. GM5535975Courtesy of GENERAL MOTORS COMPANY

    Oil Level Indicator Tube Bolt (1) - Install and tighten - Fastener Specifications

  31. GM5535974Courtesy of GENERAL MOTORS COMPANY

    Install the oil level indicator. (1)

  32. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (KL9)
  33. Start the engine and check for exhaust leaks.
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