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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 >> Valve Rocker Arm Cover Replacement - Right Side >> Installation Procedure

Installation Procedure

  1. GM5549967Courtesy of GENERAL MOTORS COMPANY

    Ignition Coil (3) @ Valve Rocker Arm Cover (1) Install - [ 4x ]

  2. Ignition Coil Bolt (2) - Install and hand tighten [ 8x ]
  3. CAUTION:

    Refer to Fastener Caution .

  4. Ignition Coil Bolt (2) - Tighten [ 8x ] - Fastener Specifications
  5. GM5549965Courtesy of GENERAL MOTORS COMPANY

    Valve Rocker Arm Cover Insulator Retainer (1) - Install and tighten [ 3x ] - Fastener Specifications

  6. GM5549964Courtesy of GENERAL MOTORS COMPANY

    Valve Rocker Arm Cover Gasket (2) @ Valve Rocker Arm Cover (1) - Install NEW

  7. GM5549960Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Valve Rocker Arm Cover- Right Side (2) - Install

  8. Valve Rocker Arm Cover Bolt (1) - Hand tighten [ 10x ]
  9. Valve Rocker Arm Cover Bolt (1) - Tighten in sequence [ 10x ] - Fastener Specifications
  10. Engine Wiring Harness Connector @ Ignition Coil - Connect [ 4x ]
  11. GM5549236Courtesy of GENERAL MOTORS COMPANY

    Inspect the inside of the spark plug rubber boot 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 spark plug rubber boot up to a depth of 15 mm from the end of the boot. Adhesives, Fluids, Lubricants, and Sealers

  12. Push the 4 spark plug wire boots (1) onto the 4 ignition coils (2) until two audible clicks are heard.
  13. GM5549959Courtesy of GENERAL MOTORS COMPANY

    Heater Inlet and Outlet Hose Bracket (2) - Reposition

  14. Heater Hose Clip Bracket Bolt (1) - Install and tighten - Fastener Specifications
  15. GM5537681Courtesy of GENERAL MOTORS COMPANY

    Valve Rocker Arm Cover Insulator (3) - Install

  16. Install the 3 upper intake manifold sight shield grommets (1) to the 3 valve rocker arm cover insulator retainers (2).
  17. GM5527948Courtesy of GENERAL MOTORS COMPANY

    Positive Crankcase Ventilation Tube Connector (3) @ Positive Crankcase Ventilation Fitting - Install - Plastic Collar Quick Connect Fitting Service