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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 ( 9 Of 12) >> Repair Instructions >> Engine Oil Level Indicator Switch Replacement (4WD with WTX without F47) >> Removal Procedure

Removal Procedure

  1. Remove the negative battery cable from the battery. Battery Negative Cable Disconnection and Connection (KL9)
  2. GM5535974Courtesy of GENERAL MOTORS COMPANY

    Remove the oil level indicator. (1)

  3. GM5535975Courtesy of GENERAL MOTORS COMPANY

    Oil Level Indicator Tube Bolt (1) - Remove

  4. Remove both front tire and wheel assemblies. Tire and Wheel Removal and Installation (Aluminum Wheel)
  5. Engine Oil and Oil Filter - Remove and DISCARD - Engine Oil and Oil Filter Replacement
  6. GM5540945Courtesy of GENERAL MOTORS COMPANY

    Front Bumper Fascia Air Deflector Bolt (1) - Remove [ 10x ]

  7. Front Bumper Fascia Extension Bolt (2) - Remove [ 8x ]
  8. GM5540946Courtesy of GENERAL MOTORS COMPANY

    Pull the front bumper fascia extension (1) rearward and down from the front bumper fascia.

  9. GM5591893Courtesy of GENERAL MOTORS COMPANY

    Front Bumper Fascia Extension Bolt (2) - Remove [ 4x ]

  10. Front Bumper Fascia Extension Bolt @ Skid Shield (3) - Remove [ 2x ]
  11. Remove wiring harness retainers as necessary.
  12. Pull the front bumper fascia extension (4) rearward and down.
  13. GM5513633Courtesy of GENERAL MOTORS COMPANY

    Underbody Skid Shield Bolt (1) - Remove [ 2x ]

  14. Underbody Skid Shield (2) - Remove
  15. GM5568873Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Clip (1) - Release

  16. Have an assistant apply the brakes.
  17. GM5580467Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    DO NOT use air tools to remove the wheel drive shaft nut. Damage to the wheel drive shaft threads could occur. Use hand tools only.

    Front Wheel Drive Shaft Nut (1) - Remove and DISCARD

  18. GM5591238Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    DO NOT use air tools to remove the wheel drive shaft nut. Damage to the wheel drive shaft threads could occur. Use hand tools only.

    Front Wheel Drive Shaft Nut (1) - Remove and DISCARD

  19. GM5591239Courtesy of GENERAL MOTORS COMPANY

    Install the DT-45859  Axle Remover (2) to the front wheel hub and secure with 2 wheel nuts (1) hand tightened.

  20. Using the DT-45859  Axle Remover (2), release the front wheel drive half shaft from the front wheel hub.
  21. Remove the 2 wheel nuts (1) and the DT-45859  Axle Remover (2) from the front wheel hub.
  22. GM5591237Courtesy of GENERAL MOTORS COMPANY

    Front Brake Hose Bracket Bolt (1) - Remove

  23. GM5591236Courtesy of GENERAL MOTORS COMPANY

    Front Brake Caliper Bolt (2) - Remove [ 2x ]

  24. CAUTION:

    Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

  25. Remove the brake caliper and support with heavy mechanics wire. (1)
  26. GM5591242Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Speed Sensor Bolt (1) - Remove

  27. Front Wheel Speed Sensor (2) - Remove
  28. Front Wheel Speed Sensor Bracket Bolt (3) - Remove
  29. Front Wheel Speed Sensor Bracket (4) - Remove
  30. GM5591255Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Speed Sensor Bracket Bolt (1) - Remove

  31. Remove the front wheel speed sensor wiring harness bracket (2).
  32. GM5591251Courtesy of GENERAL MOTORS COMPANY

    Steering Linkage Outer Tie Rod Nut (1) - Remove

  33. GM5591252Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Do not attempt to disconnect a steering linkage joint by driving a wedge between the joint and the attached part. Seal damage may result which will cause premature failure of the joint.

    Using the CH-43631  Ball Joint Separator (1), remove the steering linkage outer tie rod from the steering knuckle.

  34. GM5633900Courtesy of GENERAL MOTORS COMPANY

    Front Stabilizer Shaft Link Nut (1) - Remove

  35. Front Stabilizer Shaft Link @ Lower Control Arm - Remove
  36. NOTE:

    Support the lower control arm to prevent over-articulation of the front lower control arm ball joint.

  37. Support the lower control arm with a suitable jack stand.
  38. GM5591253Courtesy of GENERAL MOTORS COMPANY

    Front Upper Control Arm Ball Stud Nut (1) - Loosen

  39. GM5591254Courtesy of GENERAL MOTORS COMPANY

    Using the CH-42188-B  Ball Joint Separator (1), separate the right front upper control arm (2) from the steering knuckle.

  40. Remove the CH-42188-B  Ball Joint Separator (1) from the right front upper control arm (2) and the steering knuckle.
  41. GM5591248Courtesy of GENERAL MOTORS COMPANY

    Front Upper Control Arm Ball Stud Nut (1) - Remove

  42. Remove jack stand.
  43. GM5591241Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Wheel drive shaft boots, seals and clamps should be protected from sharp objects any time service is performed on or near the wheel drive shaft(s). Damage to the boot(s), the seal(s) or the clamp(s) may cause lubricant to leak from the joint and lead to increased noise and possible failure of the wheel drive shaft.

    NOTE:

    Some components not shown for graphic clarity.

    Using a suitable flat bladed tool (1), release the front wheel drive half shaft (2) from the front differential carrier.

  44. GM5591240Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Remove the front wheel drive half shaft (1) from the front axle.

  45. Remove the front wheel drive half shaft (1) from the wheel hub.
  46. GM5595902Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Drive Shaft Retaining Ring (1) - Remove and DISCARD

  47. Front Wheel Drive Shaft Seal (2) - Remove and DISCARD
  48. GM5580468Courtesy of GENERAL MOTORS COMPANY

    Install the DT-45859  Axle Remover (2) to the front wheel hub and secure with 2 wheel nuts (1) hand tightened.

  49. Using the DT-45859  Axle Remover (2), release the front wheel drive half shaft from the front wheel hub.
  50. Remove the 2 wheel nuts (1) and the DT-45859  Axle Remover (2) from the front wheel hub.
  51. GM5527943Courtesy of GENERAL MOTORS COMPANY

    Front Brake Hose Bracket Bolt (1) - Remove

  52. 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 - Remove

  53. GM5518506Courtesy of GENERAL MOTORS COMPANY

    Front Brake Caliper Bolt (2) - Remove [ 2x ]

  54. CAUTION:

    Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

  55. Remove the brake caliper and support with heavy mechanics wire. (1)
  56. GM5582579Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Speed Sensor Bolt (1) - Remove

  57. Front Wheel Speed Sensor (2) - Remove
  58. Front Wheel Speed Sensor Bracket Bolt (3) - Remove
  59. Front Wheel Speed Sensor Bracket (4) - Remove
  60. GM5582402Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Speed Sensor Bracket Bolt (1) - Remove

  61. Remove the front wheel speed sensor wiring harness bracket (2).
  62. GM5588267Courtesy of GENERAL MOTORS COMPANY

    Steering Linkage Outer Tie Rod Nut (1) - Remove

  63. GM5589040Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Do not attempt to disconnect a steering linkage joint by driving a wedge between the joint and the attached part. Seal damage may result which will cause premature failure of the joint.

    Using the CH-43631  Ball Joint Separator (1), remove the steering linkage outer tie rod from the steering knuckle.

  64. GM5633908Courtesy of GENERAL MOTORS COMPANY

    Front Stabilizer Shaft Link Nut (1) - Remove

  65. Front Stabilizer Shaft Link @ Lower Control Arm - Remove
  66. NOTE:

    Support the lower control arm to prevent over-articulation of the front lower control arm ball joint.

  67. Support the lower control arm with a suitable jack stand.
  68. GM5604912Courtesy of GENERAL MOTORS COMPANY

    Front Upper Control Arm Ball Stud Nut (1) - Loosen

  69. GM5604914Courtesy of GENERAL MOTORS COMPANY

    Using the CH-42188-B  Ball Joint Separator (1), separate the left front upper control arm (2) from the steering knuckle.

  70. Remove the CH-42188-B  Ball Joint Separator (1) from the left front upper control arm (2) and the steering knuckle.
  71. GM5604913Courtesy of GENERAL MOTORS COMPANY

    Front Upper Control Arm Ball Stud Nut (1) - Remove

  72. Remove jack stand.
  73. GM5588262Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Wheel drive shaft boots, seals and clamps should be protected from sharp objects any time service is performed on or near the wheel drive shaft(s). Damage to the boot(s), the seal(s) or the clamp(s) may cause lubricant to leak from the joint and lead to increased noise and possible failure of the wheel drive shaft.

    NOTE:

    Some components not shown for graphic clarity.

    Using a suitable flat bladed tool (1), release the front wheel drive half shaft (2) from the front differential carrier.

  74. GM5588259Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Remove the front wheel drive half shaft (1) from the front axle.

  75. Remove the front wheel drive half shaft (1) from the wheel hub.
  76. GM5595902Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Drive Shaft Retaining Ring (1) - Remove and DISCARD

  77. Front Wheel Drive Shaft Seal (2) - Remove and DISCARD
  78. Front Wheelhouse Liner- Left Side - Remove - Front Wheelhouse Liner Replacement
  79. GM5568546Courtesy of GENERAL MOTORS COMPANY

    Unclip and reposition the chassis wiring harness bracket (1) away from the frame shock tower.

  80. GM5568487Courtesy of GENERAL MOTORS COMPANY

    Front Shock Absorber Nut (1) - Remove [ 3x ]

  81. GM5575833Courtesy of GENERAL MOTORS COMPANY

    Front Shock Absorber Bolt (1) - Remove [ 2x ]

  82. GM5002019Courtesy of GENERAL MOTORS COMPANY

    Front Shock Absorber (1) - Remove

  83. GM5591026Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Support the front stabilizer shaft.

    Front Stabilizer Shaft Bolt (1) - Remove [ 4x ]

  84. Front Stabilizer Shaft Clamp (2) - Remove [ 2x ]
  85. Front Stabilizer Shaft (3) - Remove
  86. GM5043426Courtesy of GENERAL MOTORS COMPANY

    Mark a reference point between the front axle propeller shaft (1) and the front differential drive pinion gear yoke.

  87. Front Axle Propeller Shaft Bolt (2) - Remove [ 6x ]
  88. Front Axle Propeller Shaft Washer (3) - Remove [ 3x ]
  89. Front Axle Propeller Shaft (1) - Reposition away
  90. GM5589726Courtesy of GENERAL MOTORS COMPANY

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

  91. Release the two harness retainers (2) and reposition harness.
  92. GM5620579Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Electrical Connector @ Heater Coolant Pump (2) - Disconnect

  93. Heater Water Auxiliary Pump Bolt (1) - Remove
  94. Remove the heater coolant pump and heater water auxiliary pump bracket (2) as assembly and position aside.
  95. NOTE:

    Ensure that the front axle is securely attached to the hydraulic jack.

  96. Support the front axle with a hydraulic jack.
  97. GM5568832Courtesy of GENERAL MOTORS COMPANY

    Front Differential Carrier Nut (1) - Remove

  98. Front Differential Carrier Bolt (2) - Remove and DISCARD
  99. GM5568896Courtesy of GENERAL MOTORS COMPANY

    Drivetrain and Front Suspension Frame Reinforcement Nut (1) - Remove [ 4x ]

  100. Drivetrain and Front Suspension Frame Reinforcement Bolt (2) - Remove [ 4x ]
  101. GM5568922Courtesy of GENERAL MOTORS COMPANY

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

  102. GM5589729Courtesy of GENERAL MOTORS COMPANY

    Front Differential Carrier Bracket Nut (1) - Remove

  103. Front Differential Carrier Bolt (2) - Remove
  104. GM5589730Courtesy of GENERAL MOTORS COMPANY

    Front Differential Carrier Bolt (1) - Remove

  105. GM5589733Courtesy of GENERAL MOTORS COMPANY

    Front Axle Vent Hose - Disconnect

  106. NOTE:

    The front axle may have to be maneuvered to remove it from the vehicle.

  107. Front Axle (1) - Remove
  108. GM5585541Courtesy of GENERAL MOTORS COMPANY

    Torque Converter Cover Bolt-Left Side (1) - Remove

  109. Transmission Converter Cover-Left Side (2) - Remove
  110. GM4997286Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Bracket Nut (1) - Remove

  111. GM4997823Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Pressure Sensor Sleeve (1) - Remove

  112. GM5582300Courtesy of GENERAL MOTORS COMPANY

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

  113. Wiring Harness Retainer (2) @ Engine Oil Cooler Hose - Remove
  114. GM5582326Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Adapter Bolt (1) - Remove [ 2x ]

  115. GM5582330Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose (1) @ Oil Pan - Reposition

  116. Engine Oil Cooler Gasket (2) - Remove and DISCARD
  117. GM5538525Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector @ Knock Sensor (4) - Disconnect

  118. GM5504569Courtesy of GENERAL MOTORS COMPANY

    Remove the transmission fluid auxiliary cooler pipe bracket nut (1) from the oil pan.

  119. GM5644061Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (2) - Remove

  120. Engine Wiring Harness Ground Stud (1) - Remove [ 2x ]
  121. Engine Wiring Harness (3) @ Oil Pan - Reposition
  122. GM5535977Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (1) @ Oil Level Indicator Tube (2) - Disconnect

  123. Disconnect the wiring harness connectors and retainers as necessary.
  124. GM5644122Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Clip Bolt (1) @ Oil Pan - Remove

  125. NOTE:

    Components removed in graphic to better illustrate service parts.

  126. Transmission Fluid Cooler Pipe Clip Bracket (2) @ Oil Pan - Remove
  127. GM5608335Courtesy of GENERAL MOTORS COMPANY

    Reposition the transmission cooler inlet and outlet pipe (1) as necessary.

  128. GM5535978Courtesy of GENERAL MOTORS COMPANY

    Oil Level Indicator Tube (1) @ Oil Pan - Remove

  129. Oil Level Indicator Seal (2) - Remove and DISCARD
  130. Oil Level Indicator Tube (1) - Reposition
  131. GM5569719Courtesy of GENERAL MOTORS COMPANY

    Starter Heat Shield Bolt (1) - Remove [ 2x ]

  132. GM5569721Courtesy of GENERAL MOTORS COMPANY

    Starter Heat Shield Bolt (1) - Remove

  133. Starter Heat Shield (2) - Remove
  134. GM5569769Courtesy of GENERAL MOTORS COMPANY

    Battery Negative Cable Ground Bolt (1) - Remove

  135. Starter Solenoid Cable (2) - Reposition away
  136. GM5569758Courtesy of GENERAL MOTORS COMPANY

    Starter Bolt (1) - Remove [ 2x ]

  137. Reposition the starter (2) to access the electrical connections.
  138. GM5569840Courtesy of GENERAL MOTORS COMPANY

    Protective Sleeve (4) - Reposition

  139. Starter Solenoid Cable Nut (2) - Remove
  140. Starter Solenoid Cable (1) - Remove
  141. Electrical Connector (3) - Disconnect
  142. GM5569910Courtesy of GENERAL MOTORS COMPANY

    Starter (1) - Remove

  143. GM5585543Courtesy of GENERAL MOTORS COMPANY

    Torque Converter Cover Bolt- Right Side (1) - Remove

  144. Transmission Converter Cover- Right Side (2) - Remove
  145. GM5760502Courtesy of GENERAL MOTORS COMPANY

    Transmission Bolt (1) - Remove [ 2x ]

  146. GM5589667Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect

  147. GM5569924Courtesy of GENERAL MOTORS COMPANY

    Oil Pan Bolt (2, 3) - Remove [ 16x ]

  148. Oil Pan (1) - Remove
  149. GM5577601Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Oil Deflector Bolt (1) - Remove [ 10x ]

  150. Crankshaft Oil Deflector (2) - Remove
  151. GM5577670Courtesy of GENERAL MOTORS COMPANY

    Oil Pan High Pressure Port Seal (2) - Remove and DISCARD [ 2x ]

  152. Oil Pan Front Seal (3) - Remove and DISCARD
  153. Using the appropriate tool, clean and prepare the applicable sealing surface.
  154. GM5577605Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Level Sensor Lead Clip (4) - Remove

  155. Engine Oil Level Sensor Bolt (1) - Remove [ 2x ]
  156. Engine Oil Level Indicator Switch (2) - Remove
  157. Engine Oil Level Indicator Switch O-Ring Seal (3) - Remove and DISCARD