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Home >> Chevrolet >> 2023 >> Tahoe SSV >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 5.3L (L84) Or 6.2L (L87) - Repair Instructions (7 Of 11) >> Repair Instructions >> Camshaft Replacement (L84, 2WD with RC1) >> Removal Procedure

Removal Procedure

  1. Relieve the fuel system pressure. Fuel Pressure Relief
  2. Drain the cooling system. Cooling System Draining and Filling (GE 47716 L84, L87) , or Cooling System Draining and Filling (Static L84, L87)
  3. Recover the refrigerant. Refrigerant Recovery and Recharging
  4. Remove the negative battery cable from the battery. Battery Negative Cable Disconnection and Connection (9C1, 5W4) , or Battery Negative Cable Disconnection and Connection (KL9)
  5. GM5503496Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct Clamp (1) - Loosen

  6. Disconnect the mass airflow sensor electrical connector (2) and remove all engine wiring harnesses from the air cleaner assembly.
  7. GM5503517Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct (1) - Reposition away

  8. Air Cleaner Nut (2) - Remove
  9. GM5541781Courtesy of GENERAL MOTORS COMPANY

    Hood Latch Actuator Bolt (1) - Remove [2x]

  10. Hood Secondary Latch Release Handle (2) - Remove
  11. GM5541732Courtesy of GENERAL MOTORS COMPANY

    Intake Air Baffle Retainer (1) - Remove [9x]

  12. Intake Air Splash Shield (2) - Remove
  13. GM5503528Courtesy of GENERAL MOTORS COMPANY

    Intake Air Duct Retainer (1) - Remove

  14. GM5503547Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Assembly (1) - Remove

  15. GM5001375Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Outlet Duct Bracket Bolt (1) - Remove

  16. Remove the engine wiring harness from the air cleaner outlet duct bracket.
  17. GM5581741Courtesy of GENERAL MOTORS COMPANY

    Positive Crankcase Ventilation Fresh Air Tube (3) - Disconnect - Plastic Collar Quick Connect Fitting Service

  18. Air Cleaner Outlet Duct Clamp (2) - Loosen
  19. Air Cleaner Outlet Duct (1) - Remove
  20. GM5568590Courtesy of GENERAL MOTORS COMPANY

    Radiator Surge Tank Inlet Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type

  21. Radiator Surge Tank Inlet Hose (2) @Engine Radiator - Remove and position aside
  22. GM5568597Courtesy of GENERAL MOTORS COMPANY

    Front End Sheet Metal Diagonal Brace Bolt (1) @Upper Tie Bar - Remove [4x]

  23. Front End Sheet Metal Diagonal Brace (2) @Upper Tie Bar - Remove [2x]
  24. GM5568592Courtesy of GENERAL MOTORS COMPANY

    Release the 6 integral retaining features (1).

  25. Radiator Air Upper Baffle (2) - Remove
  26. GM5572790Courtesy of GENERAL MOTORS COMPANY

    Retaining Tab (1) - Disengage [2x]

  27. Engine Wiring Harness Junction Block Cover (2) - Remove
  28. Battery Positive Cable Nut (3) - Remove
  29. Starter Solenoid Cable (4) - Remove
  30. GM5572883Courtesy of GENERAL MOTORS COMPANY

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

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

    Electrical Connector (1) - Remove [4x]

  34. GM5573198Courtesy of GENERAL MOTORS COMPANY

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

  35. Retaining Tab (1) - Disengage
  36. Engine Wiring Harness Fuse Block Bracket (3) - Remove
  37. Remove the engine wiring harness fuse block bracket.
  38. GM5568620Courtesy of GENERAL MOTORS COMPANY

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

  39. Radiator Surge Tank Outlet Hose (3) - Reposition
  40. GM5568866Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Radiator Inlet Hose Clip (2) - Remove

  41. Radiator Inlet Hose Clamp (1) - Disengage - Hose Clamp Replacement Guidelines - Spring Type
  42. Radiator Inlet Hose (3) @Engine Radiator - Remove and position aside
  43. GM5568870Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

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

  44. Electrical Connector (3) - Disconnect
  45. Wiring Harness (2) - Position aside
  46. GM5568871Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

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

  47. Electrical Connector (1) - Disconnect
  48. Wiring Harness (3) - Position aside
  49. GM5568873Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Clip (1) - Release

  50. GM5568876Courtesy of GENERAL MOTORS COMPANY

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

  51. Engine Oil Cooler Pipe Bracket Bolt (3) - Remove
  52. Engine Oil Cooler Hose (1) @Engine Radiator - Remove [2x]
  53. GM5569421Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Radiator Air Side Baffle Retainer (1) - Remove [4x]

  54. Radiator Air Side Baffle - Right Side (2) - Reposition
  55. GM5569434Courtesy of GENERAL MOTORS COMPANY

    Radiator Air Side Baffle Retainer (2) - Remove

  56. Radiator Air Side Baffle - Left Side (1) - Reposition
  57. GM5569435Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Bolt (1) - Remove

  58. Transmission Fluid Cooler Pipe Clip (2) - Remove [2x]
  59. GM5569446Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Nut (1) - Remove

  60. Transmission Fluid Cooler Inlet and Outlet Pipe (2) @Transmission Fluid Auxiliary Cooler - Remove and position aside
  61. Transmission Fluid Cooler Pipe Fitting Seal (3) - Remove and DISCARD
  62. GM5569448Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Nut (1) - Remove

  63. GM5569449Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Inlet and Outlet Pipe (1) @Transmission Fluid Auxiliary Cooler - Remove and position aside

  64. Transmission Fluid Cooler Pipe Fitting Seal (2) - Remove and DISCARD
  65. GM5569584Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Pipe Clip (1) - Release

  66. GM5569581Courtesy of GENERAL MOTORS COMPANY

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

  67. Radiator Outlet Hose (2) @Engine Radiator - Remove
  68. GM5569587Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor and Condenser Hose Nut (1) - Remove

  69. Air Conditioning Condenser and Evaporator Hose Nut (2) - Remove
  70. GM5569588Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor and Condenser Hose (1) @Air Conditioning Condenser - Remove

  71. Air Conditioning Condenser and Evaporator Hose (3) @Air Conditioning Condenser - Remove
  72. Air Conditioning Compressor and Condenser Hose Seal (2) - Remove and DISCARD [2x]
  73. GM5569590Courtesy of GENERAL MOTORS COMPANY

    Rotate the top of the condenser, fan and radiator assembly (1) rearward and lift it out of the engine compartment.

  74. GM5571687Courtesy of GENERAL MOTORS COMPANY

    Plenum Front Panel Outer Reinforcement (1) - Remove - Plenum Front Panel Outer Reinforcement Removal and Installation

  75. 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).

  76. Accessory Drive Primary Belt (1) - Remove and DISCARD
  77. 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).

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

    Battery Positive Cable Nut (1) - Remove

  80. Starter Solenoid Cable (2) - Remove
  81. Electrical Connector (3) - Disconnect
  82. GM5642527Courtesy of GENERAL MOTORS COMPANY

    Generator Bolt (1) - Remove [2x]

  83. GM5642615Courtesy of GENERAL MOTORS COMPANY

    Generator (1) - Remove

  84. GM5587614Courtesy of GENERAL MOTORS COMPANY

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

  85. Heater Inlet Hose (2) @Water Pump - Remove
  86. Heater Water Auxiliary Pump Hose (3) @Water Pump - Remove
  87. 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

  88. Air Conditioning Compressor Nut (2) - Remove
  89. Air Conditioning Compressor Stud (3) - Remove
  90. GM5585692Courtesy of GENERAL MOTORS COMPANY

    Air Conditioning Compressor (1) - Position aside

  91. GM5587609Courtesy of GENERAL MOTORS COMPANY

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

  92. Radiator Outlet Hose (2) @Water Pump - Remove
  93. GM5587615Courtesy of GENERAL MOTORS COMPANY

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

  94. Engine Coolant Air Bleed Hose (2) @Water Pump - Remove
  95. Radiator Inlet Hose (3) @Water Pump - Remove
  96. GM5587616Courtesy of GENERAL MOTORS COMPANY

    Engine Coolant Temperature Sensor Electrical Connector (1) - Disconnect

  97. GM4994474Courtesy of GENERAL MOTORS COMPANY

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

  98. GM5587617Courtesy of GENERAL MOTORS COMPANY

    Water Pump (1) - Remove

  99. Water Pump Gasket (2) - Remove and DISCARD [2x]
  100. GM5527888Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Positive Crankcase Ventilation Tube Connector (1) @Positive Crankcase Ventilation Fitting - Disconnect - Plastic Collar Quick Connect Fitting Service

  101. Positive Crankcase Ventilation Tube Connector (2) @Intake Manifold - Disconnect - Plastic Collar Quick Connect Fitting Service
  102. Positive Crankcase Ventilation Foul Air Tube (3) - Remove
  103. GM5538400Courtesy of GENERAL MOTORS COMPANY

    Evaporative Emission Canister Purge Tube Connector (1) @Evaporative Emission Canister Purge Solenoid Valve - Disengage - Plastic Collar Quick Connect Fitting Service

  104. Evaporative Emission Canister Purge Tube (2) @Evaporative Emission Canister Purge Solenoid Valve - Remove and position aside
  105. GM5535974Courtesy of GENERAL MOTORS COMPANY

    Remove the oil level indicator. (1)

  106. GM5536408Courtesy of GENERAL MOTORS COMPANY

    Grasp the valve rocker arm cover insulator (3) and lift up disengaging the 3 upper intake manifold sight shield grommets (2) from the 3 valve rocker arm cover insulator retainers (1).

  107. Valve Rocker Arm Cover Insulator- Left Side (3) - Remove
  108. Inspect the 3 upper intake manifold sight shield grommets (2) on the valve rocker arm cover insulator and replace as necessary.
  109. GM5537681Courtesy of GENERAL MOTORS COMPANY

    Grasp the valve rocker arm cover insulator (3) and lift up disengaging the 3 upper intake manifold sight shield grommets (1) from the 3 valve rocker arm cover insulator retainers (2).

  110. Valve Rocker Arm Cover Insulator- Right Side (3) - Remove
  111. Inspect the 3 upper intake manifold sight shield grommets (1) on the valve rocker arm cover insulator (3) and replace as necessary.
  112. GM5540971Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Connector (1) @Throttle Body - Disconnect

  113. Engine Wiring Harness Retainer (2) @Intake Manifold Cover - Remove [2x]
  114. Engine Wiring Harness Connector (3) @Manifold Absolute Pressure Sensor - Disconnect
  115. Engine Wiring Harness Connector (4) @Evaporative Emission Canister Purge Solenoid Valve - Disconnect
  116. GM5540973Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (1) @Intake Manifold Cover (2) - Remove [4x]

  117. GM5540974Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (1) @Intake Manifold Cover (2) - Remove [3x]

  118. GM5540977Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Loosen the 10 intake manifold bolts (1) until the bolts are no longer threaded into the cylinder heads.

  119. Move the intake manifold and intake manifold cover (2) forward enough to gain access to the rear engine wiring harness retainers.
  120. GM5540975Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (1) @Intake Manifold Cover (2) - Remove [4x]

  121. GM5540978Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The aid of an assistant may be helpful in holding the engine harness up out of the way so the upper intake manifold cover does not get caught against the engine harness.

    Remove the intake manifold and intake manifold cover (1) as an assembly.

  122. Cover the cylinder head passages in order to prevent dirt or debris from entering the passages.
  123. GM5541471Courtesy of GENERAL MOTORS COMPANY

    Intake Manifold Gasket (1) - Remove and DISCARD [8x]

  124. GM5535975Courtesy of GENERAL MOTORS COMPANY

    Oil Level Indicator Tube Bolt (1) - Remove

  125. GM5557530Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    The noise cancelling foam component MUST be replaced if it has been exposed to engine fluids. Failure to replace the noise cancelling foam component that has been exposed to engine fluids may result in an engine fire resulting in catastrophic engine damage, and possible injury or death.

    Fuel Pump Insulator (1) - Remove

  126. GM5567747Courtesy of GENERAL MOTORS COMPANY

    Valve Rocker Arm Oil Control Valve Extension Harness (1) @Valve Rocker Arm Oil Control Valve Harness - Disconnect

  127. GM5581814Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Engine Wiring Harness Bolt (1) - Remove [2x]

  128. GM5581817Courtesy of GENERAL MOTORS COMPANY

    Wiring Harness Retainer (1) - Remove

  129. GM5581818Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Bracket Bolt (1) - Remove

  130. GM5581819Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness - Reposition

  131. Engine Wiring Harness Connector (1) @Ignition Coil - Disconnect [8x]
  132. GM5569054Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Refer to Diesel/Gasoline Vapors Warning .

    Fuel Feed Pipe (1) - Disconnect - Metal Collar Quick Connect Fitting Service

  133. Fuel Feed Pipe (1) - Reposition
  134. GM5569057Courtesy of GENERAL MOTORS COMPANY

    Fuel Feed Pipe Bolt (1) - Remove

  135. Fuel Feed Pipe (2) - Disconnect - Metal Collar Quick Connect Fitting Service
  136. Fuel Feed Pipe (2) - Reposition
  137. GM5568606Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Fuel feed intermediate pipes will be delivered with shipping caps that are meant to protect the mating joint threads. Do NOT remove shipping caps until the pipe is to be installed and joints are to be secured. Failure to do so could result in damage to the mating threads.

    NOTE:

    Do NOT reuse the fuel feed intermediate pipe (2). If the 2 fuel feed intermediate pipe nuts (1) are loosened or the fuel feed intermediate pipes are removed, the fuel feed intermediate pipes MUST be replaced.

    Fuel Feed Intermediate Pipe Nut (1) @Fuel Feed Intermediate Pipe (2) - Loosen until disengaged [2x]

  138. Fuel Feed Intermediate Pipe (2) - Remove and DISCARD
  139. GM5612992Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do NOT reuse the fuel feed intermediate pipe (3). If the 2 fuel feed intermediate pipe nuts (1) are loosened or the fuel feed intermediate pipes are removed, the fuel feed intermediate pipes MUST be replaced.

    Fuel Feed Intermediate Pipe Nut (1) - Loosen until disengaged [2x]

  140. Fuel Feed Pipe Bolt (2) - Remove
  141. Fuel Feed Intermediate Pipe (3) - Remove and DISCARD
  142. Disconnect and reposition the fuel pump and fuel injector wiring harness as necessary.
  143. GM5568498Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Alternately loosen the fuel pump bolts one turn at a time until the pump is fully disengaged from fuel pump lifter follower. Trying to remove the pump bolts without even side-to-side loosening may result in pump plunger damage

    Fuel Pump Bolt (1) - Remove [2x]

  144. Fuel Pump Cover (2) - Remove
  145. Fuel Pump Bolt Retainer (3) - Remove [2x]
  146. Fuel Pump (4) - Remove
  147. Fuel Pump Bracket Gasket (5) - Remove and DISCARD
  148. Front Wheelhouse Liner- Left Side and Right Side - Remove - Front Wheelhouse Liner Replacement
  149. Engine Oil and Oil Filter - Remove and DISCARD - Engine Oil and Oil Filter Replacement
  150. GM5512320Courtesy of GENERAL MOTORS COMPANY

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

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

    Underbody Splash Shield (1) - Remove

  153. GM5512332Courtesy of GENERAL MOTORS COMPANY

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

  154. Underbody Skid Shield (3) - Remove
  155. GM5525401Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Avoid contact with HOT components. Wear safety glasses and protective gloves to avoid personal injury.

    NOTE:
    • The heated oxygen sensor in-line connector and louvered end MUST be kept clear of all grease, dirt, and other contaminants. Do NOT use cleaning solvents of any type. Do NOT drop or roughly handle the heated oxygen sensor (1).
    • The heated oxygen sensor (1) MAY be difficult to remove when the engine temperature is less than 48°C (120°F).

    Disconnect the heated oxygen sensor electrical connector.

  156. Using a suitable tool, remove the heated oxygen sensor (1).
  157. GM5508824Courtesy of GENERAL MOTORS COMPANY

    Exhaust Heat Shield Bolt- Left Side (1) - Remove

  158. Exhaust Front Pipe Heat Shield- Left Side (2) - Remove
  159. GM5508826Courtesy of GENERAL MOTORS COMPANY

    Exhaust Heat Shield Bolt- Right Side (1) - Remove

  160. Exhaust Front Pipe Heat Shield- Right Side (2) - Remove
  161. GM5568855Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The heated oxygen sensor in-line connector and louvered end MUST be kept clear of all grease, dirt, and other contaminants. Do NOT use cleaning solvents of any type. Do NOT drop or roughly handle the oxygen sensor (1).
    • The heated oxygen sensor (1) MAY be difficult to remove when the engine temperature is less than 48°C (120°F).

    Disconnect the heated oxygen sensor electrical connector.

  162. Using a suitable tool, remove the heated oxygen sensor (1).
  163. GM5584496Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

    Exhaust Front Pipe Nut- Left Side (1) - Remove [3x]

  164. GM5584486Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

    Exhaust Front Pipe Nut- Right Side (1) - Remove [3x]

  165. GM5001105Courtesy of GENERAL MOTORS COMPANY

    Exhaust System Seal (1) - Remove and DISCARD

  166. GM5001113Courtesy of GENERAL MOTORS COMPANY

    Exhaust System Seal (1) - Remove and DISCARD

  167. CAUTION:

    With wheels of the vehicle facing straight ahead, secure the steering wheel utilizing steering column anti-rotation pin, steering column lock, or a strap to prevent rotation. Locking of the steering column will prevent damage and a possible malfunction of the SIR system. The steering wheel must be secured in position before disconnecting the following components:

    • The steering column
    • The intermediate shaft (s)
    • The steering gear

    After disconnecting these components, do not rotate the steering wheel or move the front tires and wheels. Failure to follow this procedure may cause the SIR coil assembly to become un-centered and cause possible damage to the SIR coil. If you think the SIR coil has became un-centered, refer to your specific SIR coil's centering procedure to re-center SIR Coil.

  168. Secure the steering wheel so it will not turn when the upper intermediate steering shaft and steering column are disconnected.
  169. GM5002170Courtesy of GENERAL MOTORS COMPANY

    Mid Intermediate Steering Shaft Bolt (1) - Remove

  170. GM5002171Courtesy of GENERAL MOTORS COMPANY

    Upper Intermediate Steering Shaft (1) @Intermediate Steering Shaft - Separate

  171. GM5541819Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Pull only on the spark plug wire boot to remove the spark plug wire (1).

    Twist the 4 spark plug wire boots a 1/2 turn and remove the spark plug wires (1) from the gas engine ignition spark plugs (2).

  172. GM5647219Courtesy of GENERAL MOTORS COMPANY

    Remove the 3 left side exhaust manifold heat shield bolts (1) through the wheel opening.

  173. GM5647218Courtesy of GENERAL MOTORS COMPANY

    Exhaust Manifold Heat Shield- Left Side (1) - Remove

  174. GM5647175Courtesy of GENERAL MOTORS COMPANY

    Exhaust Manifold Bolt- Left Side (1) - Remove and DISCARD [5x]

  175. GM5647178Courtesy of GENERAL MOTORS COMPANY

    Exhaust Manifold- Left Side (1) - Remove

  176. Exhaust Manifold Gasket- Left Side (2) - Remove and DISCARD
  177. GM4992215Courtesy of GENERAL MOTORS COMPANY

    Exhaust Manifold Heat Shield Bolt- Right Side (1) - Remove [3x]

  178. GM5541819Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Pull only on the spark plug wire boot to remove the spark plug wire (1).

    Twist the 4 spark plug wire boots 1/2 turn and remove the 4 spark plug wires (1) from the 4 gas engine ignition spark plugs (2).

  179. GM4992288Courtesy of GENERAL MOTORS COMPANY

    Remove the right exhaust manifold heat shield (1) through the wheel opening.

  180. GM4992369Courtesy of GENERAL MOTORS COMPANY

    Exhaust Manifold Bolt- Right Side (1) - Remove and DISCARD [5x]

  181. GM4992392Courtesy of GENERAL MOTORS COMPANY

    Remove the right side exhaust manifold (1) through the wheel opening.

  182. Exhaust Manifold Gasket- Right Side (2) - Remove and DISCARD
  183. GM5549496Courtesy of GENERAL MOTORS COMPANY

    Valve Rocker Arm Cover Bolt- Left Side (1) - Loosen until disengaged [9x]

  184. Valve Rocker Arm Cover- Left Side (2) - Remove
  185. GM5549498Courtesy of GENERAL MOTORS COMPANY

    Valve Rocker Arm Cover Gasket- Left Side (2) @Valve Rocker Arm Cover (1) - Remove and DISCARD

  186. GM5569335Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Only replace the valve rocker arms (1) and valve push rods as required.
    • The rocker arm pivot support bolts are not serviced separately.
    • Place the valve rocker arms (1) and valve push rods in a rack so they can be installed in the same location from which they were removed.

    Valve Rocker Arm Pivot Support Bolt (2) - Loosen until disengaged [8x]

  187. Valve Rocker Arm (1) - Remove [8x]
  188. GM5569419Courtesy of GENERAL MOTORS COMPANY

    Valve Push Rod- Left Side (1) - Remove [8x]

  189. GM5582297Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Ground Bolt (1) - Remove

  190. Engine Wiring Harness (2) - Remove
  191. GM5582379Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The forward most fastener on the Left Side Cylinder Head is unique to all other cylinder head fasteners. It is shorter, has an internal hex drive and has a lower final tightening torque angle.

    Cylinder Head Bolt- M12 x 102 (1) - Remove and DISCARD

  192. Cylinder Head Bolt- M12 x 134 (2) - Remove and DISCARD [9x]
  193. GM5582380Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    After removal, place the cylinder head on 2 wood blocks in order to prevent damage to the sealing surfaces.

    Cylinder Head (2) - Remove

  194. Cylinder Head Gasket (1) - Remove and DISCARD
  195. GM5549959Courtesy of GENERAL MOTORS COMPANY

    Heater Hose Clip Bracket Bolt (1) - Remove

  196. Heater Inlet and Outlet Hose Bracket (2) - Reposition
  197. GM5584902Courtesy of GENERAL MOTORS COMPANY

    Retainer Clip (1) @Cylinder Head - Right Side (2) - Remove

  198. GM5549960Courtesy of GENERAL MOTORS COMPANY

    Valve Rocker Arm Cover Bolt (1) - Loosen until disengaged [10x]

  199. Valve Rocker Arm Cover- Right Side (2) - Remove
  200. GM5549964Courtesy of GENERAL MOTORS COMPANY

    Valve Rocker Arm Cover Gasket- Right Side (2) @Valve Rocker Arm Cover (1) - Remove and DISCARD

  201. GM5569716Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Only replace the valve rocker arms (1) and valve push rods as required.
    • The rocker arm pivot support bolts are not serviced separately.
    • Place the valve rocker arms (1) and valve push rods in a rack so they can be installed in the same location from which they were removed.

    Valve Rocker Arm Pivot Support Bolt (1) - Loosen until disengaged [8x]

  202. Valve Rocker Arm (2) - Remove [8x]
  203. GM5569717Courtesy of GENERAL MOTORS COMPANY

    Valve Push Rod- Right Side (1) - Remove [8x]

  204. GM5584907Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Engine Wiring Harness Ground Bolt (1) - Remove

  205. Engine Wiring Harness (2) - Reposition
  206. GM5584908Courtesy of GENERAL MOTORS COMPANY

    Cylinder Head Bolt (1) - Remove and DISCARD [10x]

  207. GM5584910Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    After removal, place the cylinder head on 2 wood blocks in order to prevent damage to the sealing surfaces.

    Cylinder Head (1) - Remove

  208. Cylinder Head Gasket (2) - Remove and DISCARD
  209. GM5567748Courtesy of GENERAL MOTORS COMPANY

    Engine Block Valley Cover Bolt (2) - Loosen until disengaged [9x]

  210. Engine Block Valley Cover (1) - Remove
  211. GM5567750Courtesy of GENERAL MOTORS COMPANY

    Engine Block Valley Cover Gasket (2) @Engine Block Valley Cover (1) - Remove and DISCARD

  212. GM5567753Courtesy of GENERAL MOTORS COMPANY

    Wiring Harness Connector Seal (1) @Valve Rocker Arm Oil Control Valve Harness (2) - Remove and DISCARD

  213. GM5567786Courtesy of GENERAL MOTORS COMPANY

    Valve Lifter Follower Guide Bolt (1) - Remove

  214. Valve Lifter Follower Guide (2) - Remove
  215. Valve Lifter Follower (3) - Remove
  216. GM5587687Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Organize and mark the valve lifters (3), valve lifter guides (2), so they can be installed to their original location.
    • Only replace the valve lifters (3) and valve lifter guides (2) as required.

    Valve Lifter Guide Bolt- Left Side (1) - Remove (2)

  217. NOTE:

    Note the installed position of the valve lifter guides (2). The notched area of the valve lifter guides (2) align with the locating tab on the engine block.

  218. Remove the valve lifter guide (2) and the valve lifters (3) as an assembly.
  219. GM5587689Courtesy of GENERAL MOTORS COMPANY

    Valve Lifter- Left Side (1) @Valve Lifter Guide (2) - Remove

  220. GM5588248Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Organize and mark the valve lifters (3), valve lifter guides (2), so they can be installed to their original location.
    • Only replace the valve lifters and valve lifter guides as required.

    Valve Lifter Guide Bolt- Right Side (3) - Remove (2)

  221. NOTE:

    Note the installed position of the valve lifter guides (2). The notched area of the valve lifter guides (2) align with the locating tab on the engine block.

  222. Remove the valve lifter guide (2) and the valve lifters (1) as an assembly.
  223. GM5587689Courtesy of GENERAL MOTORS COMPANY

    Valve Lifter- Right Side (1) @Valve Lifter Guide (2) - Remove

  224. GM5591026Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Support the front stabilizer shaft.

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

  225. Front Stabilizer Shaft Clamp (2) - Remove [2x]
  226. Front Stabilizer Shaft (3) - Remove
  227. GM5620579Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Electrical Connector@Heater Coolant Pump (2) - Disconnect

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

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

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

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

  233. Disconnect harness connector and retainers as necessary.
  234. GM5585541Courtesy of GENERAL MOTORS COMPANY

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

  235. Torque Converter Cover- Left Side (2) - Remove
  236. GM4997286Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Cooler Hose Bracket Nut (1) - Remove

  237. GM4997823Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Pressure Sensor Sleeve (1) - Remove

  238. GM5582300Courtesy of GENERAL MOTORS COMPANY

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

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

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

  241. GM5582330Courtesy of GENERAL MOTORS COMPANY

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

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

    Electrical Connector@Knock Sensor (4) - Disconnect

  244. GM5504569Courtesy of GENERAL MOTORS COMPANY

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

  245. GM5644061Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (2) - Remove

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

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

  249. Disconnect the wiring harness connectors and retainers as necessary.
  250. GM5644122Courtesy of GENERAL MOTORS COMPANY

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

  251. NOTE:

    Components removed in graphic to better illustrate service parts.

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

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

  254. GM5535978Courtesy of GENERAL MOTORS COMPANY

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

  255. Oil Level Indicator Seal (2) - Remove and DISCARD
  256. Oil Level Indicator Tube (1) - Reposition
  257. GM5569719Courtesy of GENERAL MOTORS COMPANY

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

  258. GM5569721Courtesy of GENERAL MOTORS COMPANY

    Starter Heat Shield Bolt (1) - Remove

  259. Starter Heat Shield (2) - Remove
  260. GM5569769Courtesy of GENERAL MOTORS COMPANY

    Battery Negative Cable Ground Bolt (1) - Remove

  261. Starter Solenoid Cable (2) - Reposition away
  262. GM5569758Courtesy of GENERAL MOTORS COMPANY

    Starter Bolt (1) - Remove [2x]

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

    Protective Sleeve (4) - Reposition

  265. Starter Solenoid Cable Nut (2) - Remove
  266. Starter Solenoid Cable (1) - Remove
  267. Electrical Connector (3) - Disconnect
  268. GM5569910Courtesy of GENERAL MOTORS COMPANY

    Starter (1) - Remove

  269. GM5585543Courtesy of GENERAL MOTORS COMPANY

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

  270. Torque Converter Cover- Right Side (2) - Remove
  271. GM5591309Courtesy of GENERAL MOTORS COMPANY

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

  272. 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).
  273. GM5760502Courtesy of GENERAL MOTORS COMPANY

    Transmission Bolt (1) - Remove [2x]

  274. GM5589667Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Disconnect

  275. GM5569924Courtesy of GENERAL MOTORS COMPANY

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

  276. Oil Pan (1) - Remove
  277. GM5577670Courtesy of GENERAL MOTORS COMPANY

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

  278. Oil Pan Front Seal (3) - Remove and DISCARD
  279. GM5644180Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Balancer Bolt (1) - Remove and DISCARD

  280. 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).

  281. 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.

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

  283. GM5615528Courtesy of GENERAL MOTORS COMPANY

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

  284. Engine Front Cover (2) - Remove
  285. GM5617530Courtesy of GENERAL MOTORS COMPANY

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

  286. GM5617529Courtesy of GENERAL MOTORS COMPANY

    Oil Pump (1) - Remove

  287. 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.

  288. Compress the tensioner blade and install the EN-46330  Timing Belt Tensioner Retaining Pin (1) into the timing chain tensioner (2).
  289. GM5608754Courtesy of GENERAL MOTORS COMPANY

    Camshaft Position Actuator Solenoid Valve (1) - Remove and DISCARD

  290. GM5608758Courtesy of GENERAL MOTORS COMPANY

    Loosen and separate the camshaft position actuator (3) and timing chain (1) from the camshaft as an assembly. Position fingers behind the actuator sprocket (2) and pull the actuator (3) and sprocket (2) away from the front of the camshaft. Never pull on the reluctor wheel (3) when attempting to remove the actuator.

  291. Remove the camshaft position actuator sprocket (2) and timing chain (1) as an assembly.
  292. Insert a tie strap through the center of the actuator (3) and over the reluctor wheel to hold it together.
  293. GM5608777Courtesy of GENERAL MOTORS COMPANY

    Timing Chain Tensioner Bolt (1) - Remove [2x]

  294. Timing Chain Tensioner (2) - Remove
  295. GM5608780Courtesy of GENERAL MOTORS COMPANY

    Crankshaft Sprocket (1) @Crankshaft - Remove

  296. GM5621027Courtesy of GENERAL MOTORS COMPANY

    Camshaft Retainer Bolt (2) - Remove [4x]

  297. Camshaft Retainer (1) - Remove
  298. GM5621025Courtesy of GENERAL MOTORS COMPANY

    Camshaft (1) - Remove

  299. Using the appropriate tool, clean and prepare the applicable sealing surface.