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Home >> Chevrolet >> 2021 >> Tahoe Z71 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 5.3L (L84) Or 6.2L (L87) - Repair Instructions (4 Of 11) >> Repair Instructions >> Oil Pan Replacement (4WD with RC1 without F47) >> Installation Procedure

Installation Procedure

  1. Apply a 3 mm (0.118 in) bead of RTV sealant on the oil pan (1). Adhesives, Fluids, Lubricants, and Sealers
    GM5570478Courtesy of GENERAL MOTORS COMPANY
  2. Apply a 5 mm (0.197 in) bead of RTV sealant on the oil pan (2). Adhesives, Fluids, Lubricants, and Sealers
  3. Oil Pan High Pressure Port Seal (2) - Install NEW [2x]
    GM5577840Courtesy of GENERAL MOTORS COMPANY
  4. Oil Pan Front Seal (3) - Install NEW
  5. Oil Pan (1) - Install
    GM5569924Courtesy of GENERAL MOTORS COMPANY
  6. Oil Pan Bolt (2, 3) - Install and hand tighten [16x]
  7. Oil Pan Bolt (2, 3) - Tighten in sequence [16x] - Fastener Specifications
  8. Electrical Connector (1) - Connect
    GM5589667Courtesy of GENERAL MOTORS COMPANY
  9. Engine Wiring Harness (3) - Install
    GM5644061Courtesy of GENERAL MOTORS COMPANY
  10. Engine Wiring Harness Retainer (2) - Install
  11. Engine Wiring Harness Ground Stud (1) - Install and tighten [2x] - Ground Repair
  12. Install and tighten the transmission fluid auxiliary cooler pipe bracket nut (1). Fastener Specifications
    GM5504569Courtesy of GENERAL MOTORS COMPANY
  13. Transmission Fluid Cooler Pipe Clip Bracket (2) @Oil Pan - Install
    GM5644122Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Components removed in graphic to better illustrate service parts.

  14. Transmission Fluid Cooler Pipe Clip Bolt (1) @Oil Pan - Install and tighten - Fastener Specifications
  15. Electrical Connector@Knock Sensor (4) - Connect
    GM5538525Courtesy of GENERAL MOTORS COMPANY
  16. Oil Filter (1) - Install and tighten - Fastener Specifications
    GM5604735Courtesy of GENERAL MOTORS COMPANY
  17. Transmission Bolt (1) - Install and tighten [2x] - Fastener Specifications
    GM5760502Courtesy of GENERAL MOTORS COMPANY
  18. Engine Oil Cooler Gasket (2) - Install NEW
    GM5582330Courtesy of GENERAL MOTORS COMPANY
  19. Engine Oil Cooler Hose (1) @Oil Pan - Install
  20. Engine Oil Cooler Adapter Bolt (1) - Install and tighten [2x] - Fastener Specifications
    GM5582326Courtesy of GENERAL MOTORS COMPANY
  21. Electrical Connector (1) @Engine Oil Pressure Sensor - Connect
    GM5582300Courtesy of GENERAL MOTORS COMPANY
  22. Wiring Harness Retainer (2) @Engine Oil Cooler Hose - Install
  23. Engine Oil Pressure Sensor Sleeve (1) - Install
    GM4997823Courtesy of GENERAL MOTORS COMPANY
  24. Engine Oil Cooler Hose Bracket Nut (1) - Install and tighten - Fastener Specifications
    GM4997286Courtesy of GENERAL MOTORS COMPANY
  25. Lubricate the oil level indicator seal (2) with clean engine oil. Adhesives, Fluids, Lubricants, and Sealers
    GM5535978Courtesy of GENERAL MOTORS COMPANY
  26. Oil Level Indicator Seal (2) - Install NEW
  27. Oil Level Indicator Tube (1) @Oil Pan - Install
  28. Connect the wiring harness connectors (3) and retainers as needed.
    GM5535977Courtesy of GENERAL MOTORS COMPANY
  29. Engine Wiring Harness Retainer (1) @Oil Level Indicator Tube (2) - Connect
  30. Torque Converter Cover- Right Side (2) - Install
    GM5585543Courtesy of GENERAL MOTORS COMPANY
  31. Torque Converter Cover Bolt- Right Side (1) - Install and tighten - Fastener Specifications
  32. Torque Converter Cover- Left Side (2) - Install
    GM5585541Courtesy of GENERAL MOTORS COMPANY
  33. Torque Converter Cover Bolt- Left Side (1) - Install and tighten - Fastener Specifications
  34. Starter (1) - Install
    GM5569910Courtesy of GENERAL MOTORS COMPANY
  35. Electrical Connector (3) - Connect
    GM5569840Courtesy of GENERAL MOTORS COMPANY
  36. Protective Sleeve (4) - Install
  37. Starter Solenoid Cable (1) - Install
  38. Starter Solenoid Cable Nut (2) - Install and tighten - Fastener Specifications
  39. Starter Bolt (1) - Install and tighten [2x] - Fastener Specifications
    GM5569758Courtesy of GENERAL MOTORS COMPANY
  40. Starter Solenoid Cable (2) - Install
    GM5569769Courtesy of GENERAL MOTORS COMPANY
  41. Battery Negative Cable Ground Bolt (1) - Install and tighten - Fastener Specifications
  42. Starter Heat Shield (2) - Install
    GM5569721Courtesy of GENERAL MOTORS COMPANY
  43. Starter Heat Shield Bolt (1) - Install and tighten - Fastener Specifications
  44. Starter Heat Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications
    GM5569719Courtesy of GENERAL MOTORS COMPANY
  45. Front Axle (1) - Install
    GM5589733Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

  46. Front Axle Vent Hose - Connect
  47. Front Differential Carrier Bolt (1) - Install and tighten - Fastener Specifications
    GM5589730Courtesy of GENERAL MOTORS COMPANY
  48. Front Differential Carrier Bolt (2) - Install
    GM5589729Courtesy of GENERAL MOTORS COMPANY
  49. Front Differential Carrier Bracket Nut (1) - Install and tighten - Fastener Specifications
  50. Drivetrain and Front Suspension Frame Front Crossmember (1) - Install
    GM5568922Courtesy of GENERAL MOTORS COMPANY
  51. Drivetrain and Front Suspension Frame Reinforcement Bolt (2) - Install [4x]
    GM5568896Courtesy of GENERAL MOTORS COMPANY
  52. Using the EN-45059-A  Angle Meter, install and tighten the 4 drivetrain and front suspension frame reinforcement nuts (1). Fastener Specifications
  53. Front Differential Carrier Bolt (2) - Install NEW
    GM5568832Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution

  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. Install the heater coolant pump and heater water auxiliary pump bracket (2) as assembly.
    GM5620579Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

  57. Heater Water Auxiliary Pump Bolt (1) - Install and tighten - Fastener Specifications
  58. Electrical Connector@Heater Coolant Pump (2) - Connect
  59. Connect the front drive axle actuator electrical connector (1).
    GM5589726Courtesy of GENERAL MOTORS COMPANY
  60. Install the harness and secure the two harness retainers (2).
  61. 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:
    GM5043426Courtesy of GENERAL MOTORS COMPANY
    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
    GM5591026Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Support the front stabilizer shaft.

  66. Front Stabilizer Shaft (3) - Install
  67. Front Stabilizer Shaft Clamp (2) - Install [2x]
  68. 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.
  69. Front Stabilizer Shaft Bolt (1) - Install and tighten [4x] - Fastener Specifications
  70. Apply anti-corrosion wax to the frame shock tower. Anti-Corrosion Treatment and Repair
    GM5002019Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

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

  73. Front Shock Absorber Nut (1) - Install and tighten [3x] - Fastener Specifications
    GM5568487Courtesy of GENERAL MOTORS COMPANY
    GM5568546Courtesy of GENERAL MOTORS COMPANY
  74. Front Wheelhouse Liner- Left Side - Install [2x] - Front Wheelhouse Liner Replacement
  75. 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.
    GM5121838Courtesy of GENERAL MOTORS COMPANY
  76. Front Wheel Drive Shaft Seal (2) - Install NEW
    GM5595902Courtesy of GENERAL MOTORS COMPANY
  77. Front Wheel Drive Shaft Retaining Ring (1) - Install NEW
  78. 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
  79. Install the front wheel drive half shaft (1) into the wheel hub.
    GM5588259Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

  80. Install the front wheel drive half shaft (1) into the front axle.
  81. Ensure that the left front wheel drive half shaft (1) is fully seated in front differential carrier by pulling on the inner joint.
  82. Support the steering knuckle with a suitable jack stand.
  83. Front Upper Control Arm Ball Stud Nut (1) - Install and tighten - Fastener Specifications
    GM5604913Courtesy of GENERAL MOTORS COMPANY
  84. Remove jack stand.
  85. Front Stabilizer Shaft Link@Front Lower Control Arm - Install
    GM5633908Courtesy of GENERAL MOTORS COMPANY
  86. Front Stabilizer Shaft Link Nut (1) - Install and tighten - Fastener Specifications
  87. Steering Linkage Outer Tie Rod - Install
    GM5588267Courtesy of GENERAL MOTORS COMPANY
  88. Steering Linkage Outer Tie Rod Nut (1) - Install and tighten - Fastener Specifications
  89. Install the front wheel speed sensor wiring harness bracket (2).
    GM5582402Courtesy of GENERAL MOTORS COMPANY
  90. Front Wheel Speed Sensor Bracket Bolt (1) - Install and tighten - Fastener Specifications
  91. Front Wheel Speed Sensor (2) - Install
    GM5582579Courtesy of GENERAL MOTORS COMPANY
  92. Front Wheel Speed Sensor Bolt (1) - Install and tighten - Fastener Specifications
  93. Front Wheel Speed Sensor Bracket (4) - Install
  94. Front Wheel Speed Sensor Bracket Bolt (3) - Install and tighten - Fastener Specifications
  95. 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:
    GM5518506Courtesy of GENERAL MOTORS COMPANY
    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.
  96. Front Brake Caliper (1) - Install
  97. Front Brake Caliper Bolt (2) - Install and tighten [2x] - Fastener Specifications
  98. Front Brake Hose Bracket Bolt (1) - Install and tighten - Fastener Specifications
    GM5527943Courtesy of GENERAL MOTORS COMPANY
  99. Front Disc Brake Pad Wear Sensor (1) @Front Brake Caliper - Install
    GM5517176Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

  100. 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.
    GM5121838Courtesy of GENERAL MOTORS COMPANY
  101. Front Wheel Drive Shaft Seal (2) - Install NEW
    GM5595902Courtesy of GENERAL MOTORS COMPANY
  102. Front Wheel Drive Shaft Retaining Ring (1) - Install NEW
  103. 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
  104. Install the front wheel drive half shaft (1) into the wheel hub.
    GM5591240Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

  105. Install the front wheel drive half shaft (1) into the front axle.
  106. Ensure that the right front wheel drive half shaft (1) is fully seated in front differential carrier by pulling on the inner joint.
  107. Support the steering knuckle with a suitable jack stand.
  108. Front Upper Control Arm Ball Stud Nut (1) - Install and tighten - Fastener Specifications
    GM5591248Courtesy of GENERAL MOTORS COMPANY
  109. Remove jack stand.
  110. Front Stabilizer Shaft Link@Lower Control Arm - Install
    GM5633900Courtesy of GENERAL MOTORS COMPANY
  111. Front Stabilizer Shaft Link Nut (1) - Install and tighten - Fastener Specifications
  112. Steering Linkage Outer Tie Rod - Install
    GM5591251Courtesy of GENERAL MOTORS COMPANY
  113. Steering Linkage Outer Tie Rod Nut (1) - Install and tighten - Fastener Specifications
  114. Install the front wheel speed sensor wiring harness bracket (2).
    GM5591255Courtesy of GENERAL MOTORS COMPANY
  115. Front Wheel Speed Sensor Bracket Bolt (1) - Install and tighten - Fastener Specifications
  116. Front Wheel Speed Sensor (2) - Install
    GM5591242Courtesy of GENERAL MOTORS COMPANY
  117. Front Wheel Speed Sensor Bolt (1) - Install and tighten - Fastener Specifications
  118. Front Wheel Speed Sensor Bracket (4) - Install
  119. Front Wheel Speed Sensor Bracket Bolt (3) - Install and tighten - Fastener Specifications
  120. 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:
    GM5591236Courtesy of GENERAL MOTORS COMPANY
    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.
  121. Front Brake Caliper (1) - Install
  122. Front Brake Caliper Bolt (2) - Install and tighten [2x] - Fastener Specifications
  123. Front Brake Hose Bracket Bolt (1) - Install and tighten - Fastener Specifications
    GM5591237Courtesy of GENERAL MOTORS COMPANY
  124. Have an assistant apply the brakes.
  125. Front Wheel Drive Shaft Nut (1) - Install NEW and tighten - Fastener Specifications
    GM5591238Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution

  126. Front Wheel Drive Shaft Nut (1) - Install NEW and tighten - Fastener Specifications
    GM5580467Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution

  127. Front Differential Carrier Oil Filler Plug (1) - Remove
    GM5535970Courtesy of GENERAL MOTORS COMPANY
    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
  128. Engine Oil Cooler Hose Clip (1) - Secure
    GM5568873Courtesy of GENERAL MOTORS COMPANY
  129. Underbody Skid Shield (3) - Install
    GM5512332Courtesy of GENERAL MOTORS COMPANY
  130. Underbody Splash Shield Bolt (2) - Install and tighten [2x] - Fastener Specifications
  131. Underbody Splash Shield (1) - Install
    GM5512311Courtesy of GENERAL MOTORS COMPANY
  132. Underbody Splash Shield Bolt (1) - Install and tighten [4x]
    GM5512320Courtesy of GENERAL MOTORS COMPANY
  133. Underbody Splash Shield Bolt (2) - Install and tighten [4x] - Fastener Specifications
  134. Install both front tire and wheel assemblies. Tire and Wheel Removal and Installation (Steel Wheel) , or Tire and Wheel Removal and Installation (Aluminum Wheel)
  135. Lower the vehicle.
  136. Oil Level Indicator Tube Bolt (1) - Install and tighten - Fastener Specifications
    GM5535975Courtesy of GENERAL MOTORS COMPANY
  137. Install the oil level indicator. (1)
    GM5535974Courtesy of GENERAL MOTORS COMPANY
  138. Fill the engine oil to the proper level with NEW engine oil.
  139. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (9C1, 5W4) , or Battery Negative Cable Disconnection and Connection (KL9)
  140. Check for oil leaks.
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