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Home >> Chevrolet >> 2021 >> Suburban Z71 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 5.3L (L84) Or 6.2L (L87) - Repair Instructions (9 Of 11) >> Repair Instructions >> Oil Pump Replacement (L84 2WD with WTX) >> Removal Procedure

Removal Procedure

  1. Remove the negative battery cable from the battery. Battery Negative Cable Disconnection and Connection (9C1, 5W4) , or Battery Negative Cable Disconnection and Connection (KL9)
  2. GM5535974Courtesy of GENERAL MOTORS COMPANY

    Remove the oil level indicator. (1)

  3. GM5001375Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct Bracket Bolt (1) - Remove

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

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

  6. Air Cleaner Outlet Duct Clamp (2) - Loosen [2x]
  7. Air Cleaner Outlet Duct (3) - Remove
  8. 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).

  9. Accessory Drive Primary Belt (1) - Remove and DISCARD
  10. 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).

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

    Battery Positive Cable Nut (1) - Remove

  13. Starter Solenoid Cable (2) - Remove
  14. Electrical Connector (3) - Disconnect
  15. GM5572790Courtesy of GENERAL MOTORS COMPANY

    Retaining Tab (1) - Disengage [2x]

  16. Engine Wiring Harness Junction Block Cover (2) - Remove
  17. Battery Positive Cable Nut (3) - Remove
  18. Starter Solenoid Cable (4) - Remove
  19. GM5572883Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Junction Block Bolt (2) - Loosen [4x]

  20. Retaining Tab (1) - Disengage [4x]
  21. Engine Wiring Harness Junction Block (3) - Remove
  22. GM5573073Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Remove [4x]

  23. GM5573198Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Fuse Block Bracket Bolt (2) - Remove [2x]

  24. Retaining Tab (1) - Disengage
  25. Engine Wiring Harness Fuse Block Bracket (3) - Remove
  26. GM5535975Courtesy of GENERAL MOTORS COMPANY

    Oil Level Indicator Tube Bolt (1) - Remove

  27. Drain the cooling system. Cooling System Draining and Filling (GE 47716 L84, L87) , or Cooling System Draining and Filling (Static L84, L87)
  28. Engine Oil and Oil Filter - Remove and DISCARD - Engine Oil and Oil Filter Replacement
  29. GM5540945Courtesy of GENERAL MOTORS COMPANY

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

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

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

  32. GM5591893Courtesy of GENERAL MOTORS COMPANY

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

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

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

  37. Underbody Skid Shield (2) - Remove
  38. GM5568873Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Clip (1) - Release

  39. GM5591026Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Support the front stabilizer shaft.

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

  40. Front Stabilizer Shaft Clamp (2) - Remove [2x]
  41. Front Stabilizer Shaft (3) - Remove
  42. GM5620579Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Electrical Connector@Heater Coolant Pump (2) - Disconnect

  43. Heater Water Auxiliary Pump Bolt (1) - Remove
  44. Remove the heater coolant pump and heater water auxiliary pump bracket (2) as assembly and position aside.
  45. GM5651694Courtesy of GENERAL MOTORS COMPANY

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

  46. Drivetrain and Front Suspension Frame Reinforcement Bolt (2) - Remove [4x]
  47. GM5651698Courtesy of GENERAL MOTORS COMPANY

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

  48. Disconnect harness connector and retainers as necessary.
  49. GM5585541Courtesy of GENERAL MOTORS COMPANY

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

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

    Engine Oil Cooler Hose Bracket Nut (1) - Remove

  52. GM4997823Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Pressure Sensor Sleeve (1) - Remove

  53. GM5582300Courtesy of GENERAL MOTORS COMPANY

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

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

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

  56. GM5582330Courtesy of GENERAL MOTORS COMPANY

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

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

    Electrical Connector@Knock Sensor (4) - Disconnect

  59. GM5504569Courtesy of GENERAL MOTORS COMPANY

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

  60. GM5644061Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (2) - Remove

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

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

  64. Disconnect the wiring harness connectors and retainers as necessary.
  65. GM5644122Courtesy of GENERAL MOTORS COMPANY

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

  66. NOTE:

    Components removed in graphic to better illustrate service parts.

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

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

  69. GM5535978Courtesy of GENERAL MOTORS COMPANY

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

  70. Oil Level Indicator Seal (2) - Remove and DISCARD
  71. Oil Level Indicator Tube (1) - Reposition
  72. GM5569719Courtesy of GENERAL MOTORS COMPANY

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

  73. GM5569721Courtesy of GENERAL MOTORS COMPANY

    Starter Heat Shield Bolt (1) - Remove

  74. Starter Heat Shield (2) - Remove
  75. GM5569769Courtesy of GENERAL MOTORS COMPANY

    Battery Negative Cable Ground Bolt (1) - Remove

  76. Starter Solenoid Cable (2) - Reposition away
  77. GM5569758Courtesy of GENERAL MOTORS COMPANY

    Starter Bolt (1) - Remove [2x]

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

    Protective Sleeve (4) - Reposition

  80. Starter Solenoid Cable Nut (2) - Remove
  81. Starter Solenoid Cable (1) - Remove
  82. Electrical Connector (3) - Disconnect
  83. GM5569910Courtesy of GENERAL MOTORS COMPANY

    Starter (1) - Remove

  84. GM5585543Courtesy of GENERAL MOTORS COMPANY

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

  85. Transmission Converter Cover- Right Side (2) - Remove
  86. GM5591309Courtesy of GENERAL MOTORS COMPANY

    Position the EN-42386  Flywheel Holding Tool (1) into place.

  87. Install the M10-1.5 x 120mm (3) and the M10-1.5 x 45mm (2) bolts and tighten to 50 N.m (37 lb ft).
  88. GM5760502Courtesy of GENERAL MOTORS COMPANY

    Transmission Bolt (1) - Remove [2x]

  89. GM5589667Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect

  90. GM5569924Courtesy of GENERAL MOTORS COMPANY

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

  91. Oil Pan (1) - Remove
  92. GM5577670Courtesy of GENERAL MOTORS COMPANY

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

  93. Oil Pan Front Seal (3) - Remove and DISCARD
  94. 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

  95. Air Conditioning Compressor Nut (2) - Remove
  96. Air Conditioning Compressor Stud (3) - Remove
  97. GM5585692Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor (1) - Position aside

  98. GM5644180Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Balancer Bolt (1) - Remove and DISCARD

  99. GM5586268Courtesy of GENERAL MOTORS COMPANY

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

  100. GM5586937Courtesy of GENERAL MOTORS COMPANY

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

  101. Remove the EN-41816-A  Crankshaft Balancer Remover (1) and the EN-44226-5  Crankshaft Protector (2) from the crankshaft balancer (3).
  102. GM5568620Courtesy of GENERAL MOTORS COMPANY

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

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

    Radiator Inlet Hose Clip (2) - Remove

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

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

  108. Electrical Connector (3) - Disconnect
  109. Wiring Harness (2) - Position aside
  110. GM5568871Courtesy of GENERAL MOTORS COMPANY

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

  111. Electrical Connector (1) - Disconnect
  112. Wiring Harness (3) - Position aside
  113. GM5568876Courtesy of GENERAL MOTORS COMPANY

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

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

    Transmission Fluid Cooler Pipe Bolt (1) - Remove

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

    Transmission Fluid Cooler Pipe Clip (1) - Release

  119. GM5001393Courtesy of GENERAL MOTORS COMPANY

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

  120. GM5001394Courtesy of GENERAL MOTORS COMPANY

    Engine Cooler Fan (1) @Engine Radiator - Remove

  121. GM5642527Courtesy of GENERAL MOTORS COMPANY

    Generator Bolt (1) - Remove [2x]

  122. GM5642615Courtesy of GENERAL MOTORS COMPANY

    Generator (1) - Remove

  123. GM4994147Courtesy of GENERAL MOTORS COMPANY

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

  124. Heater Inlet Hose (2) @Water Pump - Remove
  125. Heater Water Auxiliary Pump Hose (3) @Water Pump - Remove
  126. GM4994158Courtesy of GENERAL MOTORS COMPANY

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

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

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

  129. Engine Coolant Air Bleed Hose (2) @Water Pump - Remove
  130. Radiator Inlet Hose (3) @Water Pump - Remove
  131. GM4994461Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Temperature Sensor Electrical Connector (1) - Disconnect

  132. GM4994474Courtesy of GENERAL MOTORS COMPANY

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

  133. GM5587617Courtesy of GENERAL MOTORS COMPANY

    Water Pump (1) - Remove

  134. Water Pump Gasket (2) - Remove and DISCARD [2x]
  135. NOTE:

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

  136. If the engine front cover is reused perform the following steps:
    1. GM5606803Courtesy of GENERAL MOTORS COMPANY

      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

  137. GM5615528Courtesy of GENERAL MOTORS COMPANY

    Engine Front Cover Bolt (1, 3) - Remove [10x]

  138. Engine Front Cover (2) - Remove
  139. GM5617530Courtesy of GENERAL MOTORS COMPANY

    Oil Pump Bolt (1) - Remove [4x]

  140. GM5617529Courtesy of GENERAL MOTORS COMPANY

    Oil Pump (1) - Remove

  141. GM5608752Courtesy of GENERAL MOTORS COMPANY

    Inspect the seal (3) of the timing chain tensioner for damage and wear. If damaged or worn replace the timing chain tensioner seal.

  142. GM5835354Courtesy of GENERAL MOTORS COMPANY

    Using a suitable tool, remove the timing chain tensioner seal (1).