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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 ( 5 Of 12) >> Repair Instructions >> Engine Front Cover Replacement (L84 with RC1) >> Installation Procedure

Installation Procedure

  1. GM5590062Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Apply a 3 mm (0.118 in) bead of RTV sealant on the engine front cover as shown (1). Apply a 5 mm (0.197 in) bead of RTV sealant on the engine front cover as shown (2). Adhesives, Fluids, Lubricants, and Sealers

  2. GM5599003Courtesy of GENERAL MOTORS COMPANY

    Apply a 3 mm (0.118 in) bead of RTV sealant (1) to the engine oil pan (2). Adhesives, Fluids, Lubricants, and Sealers

  3. GM5589668Courtesy of GENERAL MOTORS COMPANY

    Engine Front Cover (1) - Install

  4. Engine Front Cover Bolt (2, 3) - Install and hand tighten [ 10x ]
  5. CAUTION:

    Refer to Fastener Caution .

  6. Engine Front Cover Bolt (2, 3) - Tighten in sequence [ 10x ] - Fastener Specifications
  7. GM5607186Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If the engine front cover is reused, the crankshaft front oil seal must be replaced.

    If the engine front cover is reused perform the following steps:

      NOTE:
      • For proper orientation, note the installation direction of the crankshaft front oil seal. The crankshaft front oil seal is a reverse-lip design. Install with "THIS SIDE OUT" displayed as shown.
      • Do NOT lubricate the crankshaft front oil seal sealing surface.
    1. Install the EN-41478-A  Crankshaft Front Oil Seal Installer (1) to the EN-51091  Crankshaft Front Oil Seal Installer (2).
    2. Install the NEW crankshaft front oil seal (3) with "THIS SIDE OUT" facing away from the engine to the EN-51091  Crankshaft Front Oil Seal Installer (2).
    3. Install the EN-41478-A  Crankshaft Front Oil Seal Installer (1) and the EN-51091  Crankshaft Front Oil Seal Installer (2) into the crankshaft.
    4. Rotate the EN-51091  Crankshaft Front Oil Seal Installer (2) clockwise until the NEW crankshaft front oil seal (3) enters the engine front cover and seats into the bottom of the engine front cover.
    5. Remove the EN-41478-A  Crankshaft Front Oil Seal Installer (1) and the EN-51091  Crankshaft Front Oil Seal Installer (2) from the crankshaft and engine front cover.
    6. Inspect the crankshaft front oil seal for proper installation. The crankshaft front oil seal should be installed evenly and completely into the engine front cover.
  8. GM5589667Courtesy of GENERAL MOTORS COMPANY

    Oil Pan Bolt (2) - Install and tighten [ 2x ] - Fastener Specifications

  9. Electrical Connector (1) - Connect
  10. Raise and support the vehicle. Lifting and Jacking the Vehicle
  11. GM5584621Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Balancer (1) - Loosely install

  12. GM5584620Courtesy of GENERAL MOTORS COMPANY

    Install the EN-41478-A  Crankshaft Front Oil Seal Installer (3) and the EN-41665-A  Crankshaft Balancer and Sprocket Installer (2) to the crankshaft.

  13. Using the EN-41665-A  Crankshaft Balancer and Sprocket Installer (2) properly seat the crankshaft balancer (1).
  14. Remove the EN-41478-A  Crankshaft Front Oil Seal Installer (3) and the EN-41665-A  Crankshaft Balancer and Sprocket Installer (2).
  15. GM5582554Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The balancer holding kit (1) should be assembled as it is installed on the crankshaft balancer (3).
    • Some components not shown for graphic clarity.

    Install the EN-52287  Balancer Holding Kit (1) and the EN-956-1  Extension Bar (2) to the crankshaft balancer (3).

  16. GM5582462Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Balancer Bolt (1) - Install NEW and tighten - Fastener Specifications

  17. Remove the EN-52287  Balancer Holding Kit (3) and the EN-956-1  Extension Bar (4) from the crankshaft balancer (2).
  18. GM5512332Courtesy of GENERAL MOTORS COMPANY

    Underbody Skid Shield (3) - Install

  19. Underbody Skid Shield Bolt (2) - Install and tighten [ 2x ] - Fastener Specifications
  20. GM5512311Courtesy of GENERAL MOTORS COMPANY

    Underbody Splash Shield (1) - Install

  21. GM5512320Courtesy of GENERAL MOTORS COMPANY

    Underbody Splash Shield Bolt (1) - Install and tighten [ 4x ] - Fastener Specifications

  22. Underbody Splash Shield Bolt (2) - Install and tighten [ 4x ] - Fastener Specifications
  23. GM5604735Courtesy of GENERAL MOTORS COMPANY

    Oil Filter (1) - Install and tighten - Engine Oil and Oil Filter Replacement

  24. Lower the vehicle.
  25. GM5587617Courtesy of GENERAL MOTORS COMPANY

    Water Pump Gasket (2) - Install NEW [ 2x ]

  26. Water Pump (1) - Install
  27. GM4994474Courtesy 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.
  28. Water Pump Housing Bolt (1) - Install and hand tighten [ 6x ]
  29. Water Pump Housing Bolt (1) - Tighten in sequence [ 6x ] - Fastener Specifications
  30. GM4994461Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Temperature Sensor Electrical Connector (1) - Connect

  31. GM4994407Courtesy of GENERAL MOTORS COMPANY

    Radiator Inlet Hose (3) @ Water Pump - Install

  32. Engine Coolant Air Bleed Hose (2) @ Water Pump - Install
  33. Hose Clamp (1) - Engage [ 2x ] - Hose Clamp Replacement Guidelines - Spring Type
  34. GM4994158Courtesy of GENERAL MOTORS COMPANY

    Radiator Outlet Hose (2) @ Water Pump - Install

  35. Radiator Outlet Hose Clamp (1) - Engage - Hose Clamp Replacement Guidelines - Spring Type
  36. GM4994147Courtesy of GENERAL MOTORS COMPANY

    Heater Water Auxiliary Pump Hose (3) @ Water Pump - Install

  37. Heater Inlet Hose (2) @ Water Pump - Install
  38. Hose Clamp (1) - Engage [ 2x ] - Hose Clamp Replacement Guidelines - Spring Type
  39. GM5585692Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor (1) - Install

  40. GM5585694Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor Bolt (1) - Loosely install

  41. Air Conditioning Compressor Stud (3) - Install and tighten - Fastener Specifications
  42. Air Conditioning Compressor Bolt (1) - Tighten - Fastener Specifications
  43. Air Conditioning Compressor Nut (2) - Install and tighten - Fastener Specifications
  44. GM5575803Courtesy of GENERAL MOTORS COMPANY

    Generator (1) - Install

  45. GM5573707Courtesy of GENERAL MOTORS COMPANY

    Generator Bolt (1) - Install and tighten - Fastener Specifications

  46. Generator Bolt (2) - Install and tighten - Fastener Specifications
  47. GM5001394Courtesy of GENERAL MOTORS COMPANY

    Engine Cooler Fan (1) @ Engine Radiator - Install

  48. GM5001393Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Fan Bracket Bolt (1) - Install and tighten [ 2x ] - Fastener Specifications

  49. GM5569584Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Clip (1) - Secure

  50. GM5569435Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Clip (2) - Install [ 2x ]

  51. Transmission Fluid Cooler Pipe Bolt (1) - Install and tighten - Fastener Specifications
  52. GM5568876Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose (1) @ Engine Radiator - Install [ 2x ]

  53. Engine Oil Cooler Pipe Bracket Bolt (3) - Install and tighten - Fastener Specifications
  54. Engine Oil Cooler Retainer (2) - Install [ 2x ]
  55. GM5568871Courtesy of GENERAL MOTORS COMPANY

    Position the wiring harness. (3)

  56. Electrical Connector (1) - Connect
  57. Wiring Harness Retainer (2) - Install [ 2x ]
  58. GM5568870Courtesy of GENERAL MOTORS COMPANY

    Position the wiring harness. (2)

  59. Electrical Connector (3) - Connect
  60. Wiring Harness Retainer (1) - Install [ 2x ]
  61. GM5568866Courtesy of GENERAL MOTORS COMPANY

    Radiator Inlet Hose (3) @ Engine Radiator - Install

  62. Radiator Inlet Hose Clamp (1) - Engage - Hose Clamp Replacement Guidelines - Spring Type
  63. Radiator Inlet Hose Clip (2) - Install
  64. GM5568620Courtesy of GENERAL MOTORS COMPANY

    Radiator Surge Tank Outlet Hose (3) - Move into position

  65. Radiator Surge Tank Outlet Hose Clip (2) - Install [ 2x ]
  66. GM5568873Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Clip (1) - Secure

  67. GM5573641Courtesy of GENERAL MOTORS COMPANY

    Starter Solenoid Cable (2) - Install

  68. Battery Positive Cable Nut (1) - Install and tighten - Fastener Specifications
  69. Electrical Connector (3) - Connect
  70. GM5116154Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The OEM replacement stretchy accessory drive auxiliary belt is packaged with a disposable installation tool and installation instructions.

    Install the accessory drive auxiliary belt (1) following the instructions included with the accessory drive auxiliary belt.

  71. Inspect the accessory drive auxiliary belt (1) for proper installation and alignment.
  72. GM5116156Courtesy of GENERAL MOTORS COMPANY

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

  73. 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).

  74. GM5115929Courtesy of GENERAL MOTORS COMPANY

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

  75. GM5115932Courtesy of GENERAL MOTORS COMPANY

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

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

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

  79. GM5115454Courtesy of GENERAL MOTORS COMPANY

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

  80. GM5551440Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct (3) - Install

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

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

  84. Install engine wiring harness to air cleaner outlet duct bracket.
  85. Fill the engine oil to the proper level with NEW engine oil.
  86. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (KL9)
  87. Fill the cooling system. Cooling System Draining and Filling (GE 47716 L84, L87) , or Cooling System Draining and Filling (Static L84, L87) .
  88. Start the engine and check for coolant leaks.
  89. Check for oil leaks.