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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) >> Removal Procedure

Removal Procedure

  1. Remove the negative battery cable from the battery. Battery Negative Cable Disconnection and Connection (KL9)
  2. GM5001375Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct Bracket Bolt (1) - Remove

  3. Remove engine wiring harness from air cleaner outlet duct bracket.
  4. GM5551440Courtesy of GENERAL MOTORS COMPANY

    Positive Crankcase Ventilation Fresh Air Tube (1) - Disconnect - Plastic Collar Quick Connect Fitting Service

  5. Air Cleaner Outlet Duct Clamp (2) - Loosen [ 2x ]
  6. Air Cleaner Outlet Duct (3) - Remove
  7. GM5606792Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The accessory drive primary belt is not reusable.

    Using a suitable tool, cut the accessory drive primary belt (1).

  8. Accessory Drive Primary Belt (1) - Remove and DISCARD
  9. GM5606811Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The accessory drive auxiliary belt is not reusable.

    Using a suitable tool, cut the accessory drive auxiliary belt (1).

  10. Accessory Drive Auxiliary Belt (1) - Remove and DISCARD
  11. GM5573641Courtesy of GENERAL MOTORS COMPANY

    Battery Positive Cable Nut (1) - Remove

  12. Starter Solenoid Cable (2) - Remove
  13. Electrical Connector (3) - Disconnect
  14. Raise and support the vehicle. Lifting and Jacking the Vehicle
  15. Drain the cooling system. Cooling System Draining and Filling (GE 47716 L84, L87) , or Cooling System Draining and Filling (Static L84, L87) .
  16. Engine Oil and Oil Filter - Remove and DISCARD - Engine Oil and Oil Filter Replacement
  17. GM5512320Courtesy of GENERAL MOTORS COMPANY

    Front Bumper Fascia Skid Plate Bolt (1) - Remove [ 4x ]

  18. Underbody Splash Shield Bolt (2) - Remove [ 4x ]
  19. GM5512311Courtesy of GENERAL MOTORS COMPANY

    Underbody Splash Shield (1) - Remove

  20. GM5512332Courtesy of GENERAL MOTORS COMPANY

    Underbody Skid Shield Bolt (2) - Remove [ 2x ]

  21. Underbody Skid Shield (3) - Remove
  22. GM5568873Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Clip (1) - Release

  23. GM5585694Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    It is not necessary to recover and recharge the refrigerant to perform this repair.

    Air Conditioning Compressor Bolt (1) - Remove

  24. Air Conditioning Compressor Nut (2) - Remove
  25. Air Conditioning Compressor Stud (3) - Remove
  26. GM5585692Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor Assembly (1) - Position aside

  27. GM5582461Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The balancer holding kit (4) should be assembled as it is installed on the crankshaft balancer (2).
    • Some components not shown for graphic clarity.

    Install the EN-52287  Balancer Holding Kit (4) and the EN-956-1  Extension Bar (3) to the crankshaft balancer (2).

  28. Hold the EN-52287  Balancer Holding Kit (4) with the EN-956-1  Extension Bar (3) and remove and DISCARD the crankshaft balancer bolt (1).
  29. Remove the EN-52287  Balancer Holding Kit (4) and the EN-956-1  Extension Bar (3) from the crankshaft balancer (2).
  30. GM5586268Courtesy of GENERAL MOTORS COMPANY

    Install the EN-41816-A  Crankshaft Balancer Remover (1) and the EN-44226-5  Crankshaft Protector (3) to the crankshaft balancer (2).

  31. GM5586937Courtesy of GENERAL MOTORS COMPANY

    Using the EN-41816-A  Crankshaft Balancer Remover (1) and the EN-44226-5  Crankshaft Protector (2) remove crankshaft balancer (3) from the crankshaft.

  32. Remove the EN-41816-A  Crankshaft Balancer Remover (1) and the EN-44226-5  Crankshaft Protector (2) from the crankshaft balancer (3).
  33. Remove the support and lower the vehicle.
  34. GM5568620Courtesy of GENERAL MOTORS COMPANY

    Radiator Surge Tank Outlet Hose Clip (2) - Remove [ 2x ]

  35. Radiator Surge Tank Outlet Hose (3) - Position aside
  36. GM5568866Courtesy of GENERAL MOTORS COMPANY

    Radiator Inlet Hose Clip (2) - Remove

  37. Radiator Inlet Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type
  38. Radiator Inlet Hose (3) @ Engine Radiator - Remove and position aside
  39. GM5568870Courtesy of GENERAL MOTORS COMPANY

    Wiring Harness Retainer (1) - Remove [ 2x ]

  40. Electrical Connector (3) - Disconnect
  41. Wiring Harness (2) - Position aside
  42. GM5568871Courtesy of GENERAL MOTORS COMPANY

    Wiring Harness Retainer (2) - Remove [ 2x ]

  43. Electrical Connector (1) - Disconnect
  44. Wiring Harness (3) - Position aside
  45. GM5568876Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Retainer (2) - Remove [ 2x ]

  46. Engine Oil Cooler Pipe Bracket Bolt (3) - Remove
  47. Engine Oil Cooler Hose (1) @ Engine Radiator - Remove [ 2x ]
  48. GM5569435Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Bolt (1) - Remove

  49. Transmission Fluid Cooler Pipe Clip (2) - Remove [ 2x ]
  50. GM5569584Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Clip (1) - Release

  51. GM5001393Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Fan Bracket Bolt (1) - Remove [ 2x ]

  52. GM5001394Courtesy of GENERAL MOTORS COMPANY

    Engine Cooler Fan (1) @ Engine Radiator - Remove

  53. GM5573707Courtesy of GENERAL MOTORS COMPANY

    Generator Bolt (1) - Remove

  54. Generator Bolt (2) - Remove
  55. GM5575803Courtesy of GENERAL MOTORS COMPANY

    Generator (1) - Remove

  56. GM4994147Courtesy of GENERAL MOTORS COMPANY

    Hose Clamp (1) - Disengage [ 2x ] - Hose Clamp Replacement Guidelines - Spring Type

  57. Heater Inlet Hose (2) @ Water Pump - Remove
  58. Heater Water Auxiliary Pump Hose (3) @ Water Pump - Remove
  59. GM4994158Courtesy of GENERAL MOTORS COMPANY

    Radiator Outlet Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type

  60. Radiator Outlet Hose (2) @ Water Pump - Remove
  61. GM4994407Courtesy of GENERAL MOTORS COMPANY

    Hose Clamp (1) - Disengage [ 2x ] - Hose Clamp Replacement Guidelines - Spring Type

  62. Engine Coolant Air Bleed Hose (2) @ Water Pump - Remove
  63. Radiator Inlet Hose (3) @ Water Pump - Remove
  64. GM4994461Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Temperature Sensor Electrical Connector (1) - Disconnect

  65. GM4994474Courtesy of GENERAL MOTORS COMPANY

    Water Pump Bolt (1) - Remove [ 6x ]

  66. GM5587617Courtesy of GENERAL MOTORS COMPANY

    Water Pump (1) - Remove

  67. Water Pump Gasket (2) - Remove and DISCARD [ 2x ]
  68. GM5606803Courtesy 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:

    1. Install the EN-51096  Seal Remover (2) to the GE-23907-1  Slide Hammer with Shaft (1).
    2. NOTE:

      EN-51096  Crankshaft Seal Remover (2) has two ends. The end with the larger bend will be used to remove the crankshaft front oil seal (3).

    3. Slide the large bend of the EN-51096  Seal Remover (2) between the lip of the crankshaft front oil seal and crankshaft. Ensure that the larger bend of the EN-51096  Crankshaft Seal Remover (2) engages the rear side of the crankshaft front oil seal (3).
    4. Using the EN-51096  Seal Remover (2) and the GE-23907-1  Slide Hammer with Shaft (1) remove the crankshaft front oil seal (3).
    5. GM5606801Courtesy of GENERAL MOTORS COMPANY

      Crankshaft Front Oil Seal (1) - Remove and DISCARD

  69. GM5589667Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect

  70. Oil Pan Bolt (2) - Remove [ 2x ]
  71. GM5589668Courtesy of GENERAL MOTORS COMPANY

    Engine Front Cover Bolt (2, 3) - Remove [ 10x ]

  72. Engine Front Cover (1) - Remove