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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 ( 8 Of 12) >> Repair Instructions >> Oil Pump Replacement (L87 4WD with RC1 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. 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. Remove both front tire and wheel assemblies. Tire and Wheel Removal and Installation (Aluminum Wheel)
  28. Drain the cooling system. Cooling System Draining and Filling (GE 47716 L84, L87) , or Cooling System Draining and Filling (Static L84, L87) .
  29. Engine Oil and Oil Filter - Remove and DISCARD - Engine Oil and Oil Filter Replacement
  30. GM5512320Courtesy of GENERAL MOTORS COMPANY

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

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

    Underbody Splash Shield (1) - Remove

  33. GM5512332Courtesy of GENERAL MOTORS COMPANY

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

  34. Underbody Skid Shield (3) - Remove
  35. GM5568873Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Clip (1) - Release

  36. Have an assistant apply the brakes.
  37. 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

  38. 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

  39. 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.

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

    Front Brake Hose Bracket Bolt (1) - Remove

  43. GM5591236Courtesy of GENERAL MOTORS COMPANY

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

  44. 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.

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

    Front Wheel Speed Sensor Bolt (1) - Remove

  47. Front Wheel Speed Sensor (2) - Remove
  48. Front Wheel Speed Sensor Bracket Bolt (3) - Remove
  49. Front Wheel Speed Sensor Bracket (4) - Remove
  50. GM5591255Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Speed Sensor Bracket Bolt (1) - Remove

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

    Steering Linkage Outer Tie Rod Nut (1) - Remove

  53. 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.

  54. GM5633900Courtesy of GENERAL MOTORS COMPANY

    Front Stabilizer Shaft Link Nut (1) - Remove

  55. Front Stabilizer Shaft Link @ Lower Control Arm - Remove
  56. NOTE:

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

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

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

  59. 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.

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

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

  62. Remove jack stand.
  63. 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.

  64. 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.

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

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

  67. Front Wheel Drive Shaft Seal (2) - Remove and DISCARD
  68. 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.

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

    Front Brake Hose Bracket Bolt (1) - Remove

  72. 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

  73. GM5518506Courtesy of GENERAL MOTORS COMPANY

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

  74. 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.

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

    Front Wheel Speed Sensor Bolt (1) - Remove

  77. Front Wheel Speed Sensor (2) - Remove
  78. Front Wheel Speed Sensor Bracket Bolt (3) - Remove
  79. Front Wheel Speed Sensor Bracket (4) - Remove
  80. GM5582402Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Speed Sensor Bracket Bolt (1) - Remove

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

    Steering Linkage Outer Tie Rod Nut (1) - Remove

  83. 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.

  84. GM5633908Courtesy of GENERAL MOTORS COMPANY

    Front Stabilizer Shaft Link Nut (1) - Remove

  85. Front Stabilizer Shaft Link @ Lower Control Arm - Remove
  86. NOTE:

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

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

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

  89. 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.

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

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

  92. Remove jack stand.
  93. 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.

  94. 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.

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

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

  97. Front Wheel Drive Shaft Seal (2) - Remove and DISCARD
  98. Front Wheelhouse Liner- Left Side - Remove - Front Wheelhouse Liner Replacement
  99. GM5568546Courtesy of GENERAL MOTORS COMPANY

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

  100. GM5568487Courtesy of GENERAL MOTORS COMPANY

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

  101. GM5575833Courtesy of GENERAL MOTORS COMPANY

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

  102. GM5002019Courtesy of GENERAL MOTORS COMPANY

    Front Shock Absorber (1) - Remove

  103. GM5591026Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Support the front stabilizer shaft.

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

  104. Front Stabilizer Shaft Clamp (2) - Remove [ 2x ]
  105. Front Stabilizer Shaft (3) - Remove
  106. GM5043426Courtesy of GENERAL MOTORS COMPANY

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

  107. Front Axle Propeller Shaft Bolt (2) - Remove [ 6x ]
  108. Front Axle Propeller Shaft Washer (3) - Remove [ 3x ]
  109. Front Axle Propeller Shaft (1) - Reposition away
  110. GM5589726Courtesy of GENERAL MOTORS COMPANY

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

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

    Some components not shown for graphic clarity.

    Electrical Connector @ Heater Coolant Pump (2) - Disconnect

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

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

  116. Support the front axle with a hydraulic jack.
  117. GM5568832Courtesy of GENERAL MOTORS COMPANY

    Front Differential Carrier Nut (1) - Remove

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

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

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

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

  122. GM5589729Courtesy of GENERAL MOTORS COMPANY

    Front Differential Carrier Bracket Nut (1) - Remove

  123. Front Differential Carrier Bolt (2) - Remove
  124. GM5589730Courtesy of GENERAL MOTORS COMPANY

    Front Differential Carrier Bolt (1) - Remove

  125. GM5589733Courtesy of GENERAL MOTORS COMPANY

    Front Axle Vent Hose - Disconnect

  126. NOTE:

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

  127. Front Axle (1) - Remove
  128. GM5585541Courtesy of GENERAL MOTORS COMPANY

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

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

    Engine Oil Cooler Hose Bracket Nut (1) - Remove

  131. GM4997823Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Pressure Sensor Sleeve (1) - Remove

  132. GM5582300Courtesy of GENERAL MOTORS COMPANY

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

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

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

  135. GM5582330Courtesy of GENERAL MOTORS COMPANY

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

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

    Electrical Connector @ Knock Sensor (4) - Disconnect

  138. GM5504569Courtesy of GENERAL MOTORS COMPANY

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

  139. GM5644061Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (2) - Remove

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

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

  143. Disconnect the wiring harness connectors and retainers as necessary.
  144. GM5644122Courtesy of GENERAL MOTORS COMPANY

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

  145. NOTE:

    Components removed in graphic to better illustrate service parts.

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

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

  148. GM5535978Courtesy of GENERAL MOTORS COMPANY

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

  149. Oil Level Indicator Seal (2) - Remove and DISCARD
  150. Oil Level Indicator Tube (1) - Reposition
  151. GM5569719Courtesy of GENERAL MOTORS COMPANY

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

  152. GM5569721Courtesy of GENERAL MOTORS COMPANY

    Starter Heat Shield Bolt (1) - Remove

  153. Starter Heat Shield (2) - Remove
  154. GM5569769Courtesy of GENERAL MOTORS COMPANY

    Battery Negative Cable Ground Bolt (1) - Remove

  155. Starter Solenoid Cable (2) - Reposition away
  156. GM5569758Courtesy of GENERAL MOTORS COMPANY

    Starter Bolt (1) - Remove [ 2x ]

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

    Protective Sleeve (4) - Reposition

  159. Starter Solenoid Cable Nut (2) - Remove
  160. Starter Solenoid Cable (1) - Remove
  161. Electrical Connector (3) - Disconnect
  162. GM5569910Courtesy of GENERAL MOTORS COMPANY

    Starter (1) - Remove

  163. GM5585543Courtesy of GENERAL MOTORS COMPANY

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

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

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

  166. 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).
  167. GM5760502Courtesy of GENERAL MOTORS COMPANY

    Transmission Bolt (1) - Remove [ 2x ]

  168. GM5589667Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect

  169. GM5569924Courtesy of GENERAL MOTORS COMPANY

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

  170. Oil Pan (1) - Remove
  171. GM5577670Courtesy of GENERAL MOTORS COMPANY

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

  172. Oil Pan Front Seal (3) - Remove and DISCARD
  173. 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

  174. Air Conditioning Compressor Nut (2) - Remove
  175. Air Conditioning Compressor Stud (3) - Remove
  176. GM5585692Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor (1) - Position aside

  177. GM5644180Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Balancer Bolt (1) - Remove and DISCARD

  178. 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).

  179. 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.

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

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

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

    Radiator Inlet Hose Clip (2) - Remove

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

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

  187. Electrical Connector (3) - Disconnect
  188. Wiring Harness (2) - Position aside
  189. GM5568871Courtesy of GENERAL MOTORS COMPANY

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

  190. Electrical Connector (1) - Disconnect
  191. Wiring Harness (3) - Position aside
  192. GM5568876Courtesy of GENERAL MOTORS COMPANY

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

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

    Transmission Fluid Cooler Pipe Bolt (1) - Remove

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

    Transmission Fluid Cooler Pipe Clip (1) - Release

  198. GM5001393Courtesy of GENERAL MOTORS COMPANY

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

  199. GM5001394Courtesy of GENERAL MOTORS COMPANY

    Engine Cooler Fan (1) @ Engine Radiator - Remove

  200. GM5642527Courtesy of GENERAL MOTORS COMPANY

    Generator Bolt (1) - Remove [ 2x ]

  201. GM5642615Courtesy of GENERAL MOTORS COMPANY

    Generator (1) - Remove

  202. GM4994147Courtesy of GENERAL MOTORS COMPANY

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

  203. Heater Inlet Hose (2) @ Water Pump - Remove
  204. Heater Water Auxiliary Pump Hose (3) @ Water Pump - Remove
  205. GM4994158Courtesy of GENERAL MOTORS COMPANY

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

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

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

  208. Engine Coolant Air Bleed Hose (2) @ Water Pump - Remove
  209. Radiator Inlet Hose (3) @ Water Pump - Remove
  210. GM4994461Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Temperature Sensor Electrical Connector (1) - Disconnect

  211. GM4994474Courtesy of GENERAL MOTORS COMPANY

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

  212. GM5587617Courtesy of GENERAL MOTORS COMPANY

    Water Pump (1) - Remove

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

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

  215. 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

  216. GM5615529Courtesy of GENERAL MOTORS COMPANY

    Disconnect Oil Pump Flow Control Solenoid Valve Wire connector (3) from the Oil Pump Flow Control Solenoid Valve (4).

  217. GM5615528Courtesy of GENERAL MOTORS COMPANY

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

  218. Engine Front Cover (2) - Remove
  219. GM5617530Courtesy of GENERAL MOTORS COMPANY

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

  220. GM5617529Courtesy of GENERAL MOTORS COMPANY

    Oil Pump (1) - Remove

  221. 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.

  222. GM5835354Courtesy of GENERAL MOTORS COMPANY

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