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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 ( 6 Of 12) >> Repair Instructions >> Oil Pan Replacement (4WD with RC1 without F47) >> Installation Procedure

Installation Procedure

  1. GM5570478Courtesy of GENERAL MOTORS COMPANY

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

  2. Apply a 5 mm (0.197 in) bead of RTV sealant on the oil pan (2). Adhesives, Fluids, Lubricants, and Sealers
  3. GM5577840Courtesy of GENERAL MOTORS COMPANY

    Oil Pan High Pressure Port Seal (2) - Install NEW [ 2x ]

  4. Oil Pan Front Seal (3) - Install NEW
  5. GM5569924Courtesy of GENERAL MOTORS COMPANY

    Oil Pan (1) - Install

  6. Oil Pan Bolt (2, 3) - Install and hand tighten [ 16x ]
  7. Oil Pan Bolt (2, 3) - Tighten in sequence [ 16x ] - Fastener Specifications
  8. GM5589667Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Connect

  9. GM5644061Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness (3) - Install

  10. Engine Wiring Harness Retainer (2) - Install
  11. Engine Wiring Harness Ground Stud (1) - Install and tighten [ 2x ] - Ground Repair
  12. GM5504569Courtesy of GENERAL MOTORS COMPANY

    Install and tighten the transmission fluid auxiliary cooler pipe bracket nut (1). Fastener Specifications

  13. GM5644122Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Components removed in graphic to better illustrate service parts.

    Transmission Fluid Cooler Pipe Clip Bracket (2) @ Oil Pan - Install

  14. Transmission Fluid Cooler Pipe Clip Bolt (1) @ Oil Pan - Install and tighten - Fastener Specifications
  15. GM5538525Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector @ Knock Sensor (4) - Connect

  16. GM5604735Courtesy of GENERAL MOTORS COMPANY

    Oil Filter (1) - Install and tighten - Fastener Specifications

  17. GM5760502Courtesy of GENERAL MOTORS COMPANY

    Transmission Bolt (1) - Install and tighten [ 2x ] - Fastener Specifications

  18. GM5582330Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Gasket (2) - Install NEW

  19. Engine Oil Cooler Hose (1) @ Oil Pan - Install
  20. GM5582326Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Adapter Bolt (1) - Install and tighten [ 2x ] - Fastener Specifications

  21. GM5582300Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) @ Engine Oil Pressure Sensor - Connect

  22. Wiring Harness Retainer (2) @ Engine Oil Cooler Hose - Install
  23. GM4997823Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Pressure Sensor Sleeve (1) - Install

  24. GM4997286Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Bracket Nut (1) - Install and tighten - Fastener Specifications

  25. GM5535978Courtesy of GENERAL MOTORS COMPANY

    Lubricate the oil level indicator seal (2) with clean engine oil. Adhesives, Fluids, Lubricants, and Sealers

  26. Oil Level Indicator Seal (2) - Install NEW
  27. Oil Level Indicator Tube (1) @ Oil Pan - Install
  28. GM5535977Courtesy of GENERAL MOTORS COMPANY

    Connect the wiring harness connectors (3) and retainers as needed.

  29. Engine Wiring Harness Retainer (1) @ Oil Level Indicator Tube (2) - Connect
  30. GM5585543Courtesy of GENERAL MOTORS COMPANY

    Torque Converter Cover- Right Side (2) - Install

  31. Torque Converter Cover Bolt- Right Side (1) - Install and tighten - Fastener Specifications
  32. GM5585541Courtesy of GENERAL MOTORS COMPANY

    Torque Converter Cover- Left Side (2) - Install

  33. Torque Converter Cover Bolt- Left Side (1) - Install and tighten - Fastener Specifications
  34. GM5569910Courtesy of GENERAL MOTORS COMPANY

    Starter (1) - Install

  35. GM5569840Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (3) - Connect

  36. Protective Sleeve (4) - Install
  37. Starter Solenoid Cable (1) - Install
  38. Starter Solenoid Cable Nut (2) - Install and tighten - Fastener Specifications
  39. GM5569758Courtesy of GENERAL MOTORS COMPANY

    Starter Bolt (1) - Install and tighten [ 2x ] - Fastener Specifications

  40. GM5569769Courtesy of GENERAL MOTORS COMPANY

    Starter Solenoid Cable (2) - Install

  41. Battery Negative Cable Ground Bolt (1) - Install and tighten - Fastener Specifications
  42. GM5569721Courtesy of GENERAL MOTORS COMPANY

    Starter Heat Shield (2) - Install

  43. Starter Heat Shield Bolt (1) - Install and tighten - Fastener Specifications
  44. GM5569719Courtesy of GENERAL MOTORS COMPANY

    Starter Heat Shield Bolt (1) - Install and tighten [ 2x ] - Fastener Specifications

  45. GM5589733Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The front axle may have to be maneuvered to install it into the vehicle.

    Front Axle (1) - Install

  46. Front Axle Vent Hose - Connect
  47. GM5589730Courtesy of GENERAL MOTORS COMPANY

    Front Differential Carrier Bolt (1) - Install and tighten - Fastener Specifications

  48. GM5589729Courtesy of GENERAL MOTORS COMPANY

    Front Differential Carrier Bolt (2) - Install

  49. Front Differential Carrier Bracket Nut (1) - Install and tighten - Fastener Specifications
  50. GM5568922Courtesy of GENERAL MOTORS COMPANY

    Drivetrain and Front Suspension Frame Front Crossmember (1) - Install

  51. GM5568896Courtesy of GENERAL MOTORS COMPANY

    Drivetrain and Front Suspension Frame Reinforcement Bolt (2) - Install [ 4x ]

  52. Using the EN-45059-A  Angle Meter, install and tighten the 4 drivetrain and front suspension frame reinforcement nuts (1). Fastener Specifications
  53. GM5568832Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution

    Front Differential Carrier Bolt (2) - Install NEW

  54. Front Differential Carrier Nut (1) - Install
  55. Using the EN-45059-A  Angle Meter, tighten the front differential carrier nut (1). Fastener Specifications
  56. GM5620579Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Install the heater coolant pump and heater water auxiliary pump bracket (2) as assembly.

  57. Heater Water Auxiliary Pump Bolt (1) - Install and tighten - Fastener Specifications
  58. Electrical Connector @ Heater Coolant Pump (2) - Connect
  59. GM5589726Courtesy of GENERAL MOTORS COMPANY

    Connect the front drive axle actuator electrical connector (1).

  60. Install the harness and secure the two harness retainers (2).
  61. GM5043426Courtesy 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.
  62. Front Axle Propeller Shaft (1) - Install
  63. Align the reference marks made between the front axle propeller shaft (1) and the front differential drive pinion gear yoke.
  64. Front Axle Propeller Shaft Washer (3) - Install [ 3x ]
  65. Install the 6 front axle propeller shaft bolts (2) and tighten in a crisscross pattern. Fastener Specifications
  66. GM5591026Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Support the front stabilizer shaft.

  67. Front Stabilizer Shaft (3) - Install
  68. Front Stabilizer Shaft Clamp (2) - Install [ 2x ]
  69. 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.
  70. Front Stabilizer Shaft Bolt (1) - Install and tighten [ 4x ] - Fastener Specifications
  71. GM5002019Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Prior to installing the front shock absorber, you MUST apply anti-corrosion wax to the frame shock tower.

    Apply anti-corrosion wax to the frame shock tower. Anti-Corrosion Treatment and Repair

  72. Front Shock Absorber (1) - Install
  73. GM5575833Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Using a jack stand support the lower control arm to prevent over-articulation of the front lower control arm ball joint.

    Front Shock Absorber Bolt (1) - Install and tighten [ 2x ] - Fastener Specifications

  74. GM5568487Courtesy of GENERAL MOTORS COMPANY

    Front Shock Absorber Nut (1) - Install and tighten [ 3x ] - Fastener Specifications

  75. GM5568546Courtesy of GENERAL MOTORS COMPANY
  76. Front Wheelhouse Liner- Left Side - Install [ 2x ] - Front Wheelhouse Liner Replacement
  77. GM5121838Courtesy of GENERAL MOTORS COMPANY

    Remove any buildup from the front differential carrier output shaft lead in chamfer (1) using an abrasive pad and wipe clean with a shop cloth.

  78. GM5595902Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Drive Shaft Seal (2) - Install NEW

  79. Front Wheel Drive Shaft Retaining Ring (1) - Install NEW
  80. Apply a thin coating of grease to the splines of the front wheel drive half shaft and front differential carrier output shaft. Adhesives, Fluids, Lubricants, and Sealers
  81. GM5588259Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Install the front wheel drive half shaft (1) into the wheel hub.

  82. Install the front wheel drive half shaft (1) into the front axle.
  83. Ensure that the left front wheel drive half shaft (1) is fully seated in front differential carrier by pulling on the inner joint.
  84. Support the steering knuckle with a suitable jack stand.
  85. GM5604913Courtesy of GENERAL MOTORS COMPANY

    Front Upper Control Arm Ball Stud Nut (1) - Install and tighten - Fastener Specifications

  86. Remove jack stand.
  87. GM5633908Courtesy of GENERAL MOTORS COMPANY

    Front Stabilizer Shaft Link @ Front Lower Control Arm - Install

  88. Front Stabilizer Shaft Link Nut (1) - Install and tighten - Fastener Specifications
  89. GM5588267Courtesy of GENERAL MOTORS COMPANY

    Steering Linkage Outer Tie Rod - Install

  90. Steering Linkage Outer Tie Rod Nut (1) - Install and tighten - Fastener Specifications
  91. GM5582402Courtesy of GENERAL MOTORS COMPANY

    Install the front wheel speed sensor wiring harness bracket (2).

  92. Front Wheel Speed Sensor Bracket Bolt (1) - Install and tighten - Fastener Specifications
  93. GM5582579Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Speed Sensor (2) - Install

  94. Front Wheel Speed Sensor Bolt (1) - Install and tighten - Fastener Specifications
  95. Front Wheel Speed Sensor Bracket (4) - Install
  96. Front Wheel Speed Sensor Bracket Bolt (3) - Install and tighten - Fastener Specifications
  97. GM5518506Courtesy 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.
  98. Front Brake Caliper (1) - Install
  99. Front Brake Caliper Bolt (2) - Install and tighten [ 2x ] - Fastener Specifications
  100. GM5527943Courtesy of GENERAL MOTORS COMPANY

    Front Brake Hose Bracket Bolt (1) - Install and tighten - Fastener Specifications

  101. GM5517176Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Only the left front wheel is equipped with the front disc brake pad wear sensor.

    Front Disc Brake Pad Wear Sensor (1) @ Front Brake Caliper - Install

  102. GM5121838Courtesy of GENERAL MOTORS COMPANY

    Remove any buildup from the front differential carrier output shaft lead in chamfer (1) using an abrasive pad and wipe clean with a shop cloth.

  103. GM5595902Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Drive Shaft Seal (2) - Install NEW

  104. Front Wheel Drive Shaft Retaining Ring (1) - Install NEW
  105. Apply a thin coating of grease to the splines of the front wheel drive half shaft and front differential carrier output shaft. Adhesives, Fluids, Lubricants, and Sealers
  106. GM5591240Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Install the front wheel drive half shaft (1) into the wheel hub.

  107. Install the front wheel drive half shaft (1) into the front axle.
  108. Ensure that the right front wheel drive half shaft (1) is fully seated in front differential carrier by pulling on the inner joint.
  109. Support the steering knuckle with a suitable jack stand.
  110. GM5591248Courtesy of GENERAL MOTORS COMPANY

    Front Upper Control Arm Ball Stud Nut (1) - Install and tighten - Fastener Specifications

  111. Remove jack stand.
  112. GM5633900Courtesy of GENERAL MOTORS COMPANY

    Front Stabilizer Shaft Link @ Lower Control Arm - Install

  113. Front Stabilizer Shaft Link Nut (1) - Install and tighten - Fastener Specifications
  114. GM5591251Courtesy of GENERAL MOTORS COMPANY

    Steering Linkage Outer Tie Rod - Install

  115. Steering Linkage Outer Tie Rod Nut (1) - Install and tighten - Fastener Specifications
  116. GM5591255Courtesy of GENERAL MOTORS COMPANY

    Install the front wheel speed sensor wiring harness bracket (2).

  117. Front Wheel Speed Sensor Bracket Bolt (1) - Install and tighten - Fastener Specifications
  118. GM5591242Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Speed Sensor (2) - Install

  119. Front Wheel Speed Sensor Bolt (1) - Install and tighten - Fastener Specifications
  120. Front Wheel Speed Sensor Bracket (4) - Install
  121. Front Wheel Speed Sensor Bracket Bolt (3) - Install and tighten - Fastener Specifications
  122. GM5591236Courtesy 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.
  123. Front Brake Caliper (1) - Install
  124. Front Brake Caliper Bolt (2) - Install and tighten [ 2x ] - Fastener Specifications
  125. GM5591237Courtesy of GENERAL MOTORS COMPANY

    Front Brake Hose Bracket Bolt (1) - Install and tighten - Fastener Specifications

  126. Have an assistant apply the brakes.
  127. GM5591238Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution

    Front Wheel Drive Shaft Nut (1) - Install NEW and tighten - Fastener Specifications

  128. GM5580467Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution

    Front Wheel Drive Shaft Nut (1) - Install NEW and tighten - Fastener Specifications

  129. GM5535970Courtesy of GENERAL MOTORS COMPANY

    Front Differential Carrier Oil Filler Plug (1) - Remove

    1. Inspect the gear lubricant level, it should be 16-22 mm (0.6-0.9 in) below the plug opening.
    2. If the level is low, add gear lubricant until the level is 16-22 mm (0.6-0.9 in) below the plug opening. Use the appropriate axle lubricant: Adhesives, Fluids, Lubricants, and Sealers
    3. Front Differential Carrier Oil Filler Plug (1) - Install and tighten - Fastener Specifications
  130. GM5568873Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Clip (1) - Secure

  131. GM5512332Courtesy of GENERAL MOTORS COMPANY

    Underbody Skid Shield (3) - Install

  132. Underbody Splash Shield Bolt (2) - Install and tighten [ 2x ] - Fastener Specifications
  133. GM5512311Courtesy of GENERAL MOTORS COMPANY

    Underbody Splash Shield (1) - Install

  134. GM5512320Courtesy of GENERAL MOTORS COMPANY

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

  135. Underbody Splash Shield Bolt (2) - Install and tighten [ 4x ] - Fastener Specifications
  136. Install both front tire and wheel assemblies. Tire and Wheel Removal and Installation (Aluminum Wheel)
  137. Lower the vehicle.
  138. GM5535975Courtesy of GENERAL MOTORS COMPANY

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

  139. GM5535974Courtesy of GENERAL MOTORS COMPANY

    Install the oil level indicator. (1)

  140. Fill the engine oil to the proper level with NEW engine oil.
  141. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (KL9)
  142. Check for oil leaks.
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