GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice

The steps in the following procedure are in a specific order. Follow these steps in this order and ignore no details or vehicle damage could occur.

Tools Required

    •  J 33432-A Transverse Leaf Spring Compressor and -97 Adapters
    •  J 42188 Ball Joint Separator
    •  J 39580 Engine Support Table
    •  J 39580-500 Engine Support Table Top
    •  J 42203 Driveline Support Strap
    • J 34730-1A Fuel Pressure Gauge

    Object Number: 74059  Size: SH
  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  2. Evacuate the A/C system. Refer to Evacuation in HVAC.
  3. Raise the vehicle and support. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Drain the coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
  5. Lower the vehicle.

  6. Object Number: 74086  Size: SH
  7. Disconnect the IAT sensor connector.
  8. Disconnect the MAF sensor connector.

  9. Object Number: 179304  Size: SH
  10. Disconnect the fuel regulator purge line from the air intake duct.
  11. Remove the air intake duct and the air cleaner assembly.

  12. Object Number: 74089  Size: SH
  13. Remove the accessory drive belt. (5)

  14. Object Number: 74075  Size: SH
  15. Remove the fuel rail covers.
  16. Relieve the fuel system pressure using J 34730-1A .
  17. Important: Cap the fittings and plug the holes when separating fuel system components in order to prevent dripping of fuel and/or dirt and other contaminants from entering the fuel system.


    Object Number: 43537  Size: SH
  18. Disconnect the fuel lines (3 and 4) at the fuel rail.

  19. Object Number: 179301  Size: SH
  20. Disconnect the radiator hoses from the water pump.

  21. Object Number: 185256  Size: SH
  22. Disconnect the heater hoses from the water pump.

  23. Object Number: 187335  Size: SH
  24. Disconnect the following electrical connectors:
  25. 16.1. Fuel injectors
    16.2. Ignition coil main connectors
    16.3. EVAP solenoid
    16.4. Electric throttle motor
    16.5. Throttle position sensor
    16.6. ECT sensor
    16.7. A/C compressor

    Object Number: 74065  Size: SH
  26. Disconnect the generator electrical connectors.

  27. Object Number: 74066  Size: SH
  28. Remove the generator rear bracket bolts.
  29. Remove the generator rear bracket.

  30. Object Number: 74067  Size: SH
  31. Remove the generator mounting bolts.
  32. Remove the generator.

  33. Object Number: 63936  Size: SH
  34. Disconnect the brake booster vacuum hose from the brake booster.

  35. Object Number: 187354  Size: SH
  36. Remove the intermediate shaft to steering gear bolt.
  37. Disconnect the intermediate steering shaft from the steering gear and slave left to the frame rail.

  38. Object Number: 187406  Size: SH
  39. Disconnect the AIR hose from the LH exhaust manifold.
  40. Important: Do not remove the engine flywheel housing to driveline support assembly bolts until it is called out in the procedure.

  41. Raise the vehicle.
  42. Remove the front tire and wheel assemblies.
  43. Remove the intermediate exhaust pipe. Refer to Intermediate Pipe in Engine Exhaust.

  44. Object Number: 67894  Size: SH
  45. Remove the close-out panel bolts.
  46. Remove the close-out panel.

  47. Object Number: 74061  Size: SH
  48. Remove the starter electrical connectors.
  49. Remove all grounds from the right side of the engine block.

  50. Object Number: 74063  Size: SH
  51. Remove the starter bolts.
  52. Remove the starter.

  53. Object Number: 187369  Size: SH
  54. Disconnect the oil level sensor connector.
  55. Disconnect the crank position sensor connector.
  56. Disconnect the RH front HO2S connector.

  57. Object Number: 82082  Size: SH
  58. Remove the A/C compressor hose retaining bolt.
  59. Remove the A/C compressor hose from the A/C compressor.

  60. Object Number: 188207  Size: SH
  61. Disconnect the engine oil temperature sensor connector.
  62. Disconnect all grounds from the left side of the engine block.
  63. Disconnect the LH front HO2S connector.

  64. Object Number: 179305  Size: SH
  65. Remove the front stabilizer bar bolts and straps.
  66. Disconnect the front stabilizer bar from the cradle.

  67. Object Number: 67972  Size: SH
  68. Disconnect the electrical connectors and harness from the electric cooling fans.

  69. Object Number: 179296  Size: SH
  70. Remove the electric cooling fan bolts.
  71. Remove both electric cooling fans.

  72. Object Number: 65337  Size: SH
  73. Install J 33432-A to the front spring.
  74. Compress the front transverse spring using J 33432-A .

  75. Object Number: 82236  Size: SH
  76. Remove the tie rod end nuts. (3)
  77. Remove the tie rod ends (5) from steering knuckles (4) using J 42188 .
  78. Disconnect the ABS electrical connectors at the cradle.
  79. Disconnect the EVO connector at the cradle.
  80. Disconnect the RTD connectors at the cradle. (if equipped)

  81. Object Number: 65335  Size: SH
  82. Remove the lower shock absorber mounting bolts.

  83. Object Number: 65333  Size: SH
  84. Separate the lower ball joints using J 42188 .

  85. Object Number: 65337  Size: SH
  86. Remove J 33432-A from the front spring.

  87. Object Number: 71418  Size: SH
  88. Disconnect the automatic transmission cooler lines at the engine flywheel housing junction. (if equipped)

  89. Object Number: 71421  Size: SH
  90. Disconnect the automatic transmission cooler lines from the radiator. (if equipped)

  91. Object Number: 173638  Size: SH
  92. With automatic transmission vehicles, use the following steps:
  93. 60.1. Remove the two plugs in the driveline support assembly.

            Important: Failure to use the minimum fastener length specified will prevent proper retention of the propeller shaft during disassembly.

    60.2. Install a M10.0 X 1.5 bolt, 55 millimeters or longer in each location.

    Tighten
    Tighten the M10.0 bearing support bolts to 35 N·m (26 lb ft).


    Object Number: 71455  Size: SH
  94. With automatic transmission vehicles, remove the engine flywheel housing access plug.

  95. Object Number: 173641  Size: SH
  96. Orientate the automatic transmission flywheel hub collar to access the bolt (1).
  97. Loosen the automatic transmission flywheel hub collar bolt (1).

  98. Object Number: 188853  Size: SH

    Important: The weight of the engine should never be supported by J42203.

  99. Install J 42203 to the close-out panel flange.
  100. Partially lower the vehicle.
  101. Support the engine and front cradle assembly on J 39580 .
  102. Remove the front cradle nuts.
  103. Partially lower the engine and front cradle.

  104. Object Number: 188034  Size: SH
  105. Disconnect the following electrical connectors:
  106. 69.1. Engine oil pressure gauge
    69.2. Camshaft position sensor
    69.3. MAP sensor
    69.4. Knock sensor
    69.5. ground on rear of LH head
    69.6. All remaining electrical connections

    Object Number: 71466  Size: SH
  107. Remove the front driveline support assembly bolts.
  108. Slide the engine and cradle assembly forward to clear the propeller shaft spline.
  109. Raise the vehicle completely off of the engine and cradle assembly.
  110. Important: It is not necessary to open the P/S system during the engine removal procedure.

  111. Remove the P/S pump and reservoir from the engine and slave to the cradle.

  112. Object Number: 188236  Size: SH
  113. Remove the engine mount to cradle nuts.
  114. Remove the engine from the cradle.

Installation Procedure

Notice

The steps in the following procedure are in a specific order. Follow these steps in this order and ignore no details or vehicle damage could occur.


    Object Number: 188236  Size: SH
  1. Install the engine to the front cradle.
  2. Install the engine mount to cradle nuts.
  3. Tighten
    Tighten the engine mount nuts to 54 N·m (40 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the P/S pump and reservoir to the engine.
  5. Tighten
    Tighten the P/S pump mounting bolts to 25 N·m (18 lb ft).

  6. Partially lower the vehicle to the engine and front cradle assembly.

  7. Object Number: 188034  Size: SH
  8. Route the electrical harnesses and connect the following electrical connectors:
  9. 5.1. Engine oil pressure gauge
    5.2. Camshaft position sensor
    5.3. MAP sensor
    5.4. Knock sensor
    5.5. Ground on rear of LH head
    5.6. All remaining electrical connections at the rear of the engine

    Object Number: 71466  Size: SH

    Important: Do not tighten the flywheel hub collar bolt at this time.

  10. Slide the engine and front cradle assembly rearward and install the propeller shaft spline to the engine. Do not force the engine onto the propeller spline.
  11. Install the front driveline support bolts.
  12. Tighten
    Tighten the engine flywheel housing to driveline support assembly bolts to 50 N·m (37 lb ft).

  13. Lower the vehicle on to the cradle and align dowels.
  14. Install the front cradle nuts.
  15. Tighten
    Tighten the front cradle nuts to 110 N·m (81 lb ft).

  16. Raise the vehicle.

  17. Object Number: 188853  Size: SH
  18. Remove J 42203 from the vehicle.

  19. Object Number: 65337  Size: SH
  20. Install J 33432-A to the front spring.
  21. Compress the front transverse spring using J 33432-A .

  22. Object Number: 65335  Size: SH
  23. Install the lower shock absorber mounting bolts.
  24. Tighten
    Tighten the shock absorber mounting bolts to 28 N·m (20 lb ft).


    Object Number: 65333  Size: SH
  25. Connect the lower ball joints to the steering knuckles.
  26. Tighten
    Tighten the lower ball joint nuts to 75 N·m (55 lb ft).


    Object Number: 82236  Size: SH
  27. Install the tie rod ends (5) to steering knuckles (4).
  28. Tighten
    Tighten the tie rod end nuts (3) to 45 N·m (33 lb ft).

  29. Install the ABS electrical connectors at the cradle.
  30. Install the EVO electrical connector at the cradle.
  31. Install RTD electrical connectors at the cradle. (if equipped)

  32. Object Number: 65337  Size: SH
  33. Remove J 33432-A from the vehicle.

  34. Object Number: 173638  Size: SH
  35. With automatic transmission vehicles use the following steps:
  36. 21.1. Remove the previously installed M10-1.5 x 55mm bolts from the front of the driveline support assembly.
    21.2. Install the plugs to the front of the driveline support assembly.

    Tighten
    Tighten the plugs to 35 N·m (26 lb ft).


    Object Number: 71421  Size: SH
  37. Connect the automatic transmission oil cooler lines to the radiator. (if equipped)
  38. Tighten
    Tighten the cooler lines to 27 N·m (20 lb ft).


    Object Number: 71418  Size: SH
  39. Connect the automatic transmission cooler lines at the engine flywheel housing junction. (if equipped)
  40. Tighten
    Tighten the automatic transmission cooler lines to 27 N·m (20 lb ft).


    Object Number: 179296  Size: SH
  41. Install both electric cooling fans.
  42. Install the electric cooling fan bolts.
  43. Tighten
    Tighten the electric cooling fan bolts to 10 N·m (89 lb in).


    Object Number: 67972  Size: SH
  44. Connect the electrical connectors and harness to the electric cooling fans.

  45. Object Number: 179305  Size: SH
  46. Install the front stabilizer bar to the front cradle.
  47. Install the front stabilizer mounting bolts and straps.
  48. Tighten
    Tighten the front stabilizer mounting bolts to 54 N·m (40 lb ft).


    Object Number: 188207  Size: SH
  49. Connect the LH front HO2S connector.
  50. Connect all the grounds on the left side of the engine block.
  51. Connect the engine oil temperature sensor connector.

  52. Object Number: 82082  Size: SH
  53. Install the A/C compressor hose to the A/C compressor.
  54. Install the A/C compressor line retaining bolt.
  55. Tighten
    Tighten the A/C compressor hose mounting bolts to 35 N·m (26 lb ft).


    Object Number: 187369  Size: SH
  56. Connect the RH front HO2S connector.
  57. Connect the crank position sensor connector.
  58. Connect the oil level sensor connector.

  59. Object Number: 74063  Size: SH
  60. Install the starter.
  61. Install the starter mounting bolts.
  62. Tighten
    Tighten the starter mounting bolts to 50 N·m (37 lb ft).


    Object Number: 74061  Size: SH
  63. Install all the grounds on the RH side of the engine block.
  64. Connect the positive battery cable to the starter.
  65. Tighten
    Tighten positive battery cable nut to 15 N·m (11 lb ft).

  66. Connect the S terminal wire to the starter.
  67. Tighten
    Tighten S terminal wire nut to 4 N·m (35 lb in).


    Object Number: 67894  Size: SH
  68. Install the close-out panel.
  69. Install the close-out panel bolts.
  70. Tighten
    Tighten the close-out panel bolts to 12 N·m (102 lb in).

  71. Install the intermediate exhaust pipe. Refer to Intermediate Pipe in Engine Exhaust.
  72. Install the front tire and wheel assemblies.
  73. Tighten
    Tighten the wheel nuts to 140N·m (100 lb ft).

  74. Lower the vehicle.

  75. Object Number: 187406  Size: SH
  76. Connect the AIR hose to the LH exhaust manifold.

  77. Object Number: 187354  Size: SH
  78. Connect the intermediate steering shaft to the steering gear.
  79. Install the intermediate steering shaft bolt.
  80. Tighten
    Tighten the intermediate steering shaft bolt to 48 N·m (35 lb ft).


    Object Number: 63936  Size: SH
  81. Connect the brake booster vacuum hose to the brake booster.

  82. Object Number: 74067  Size: SH
  83. Install the generator.
  84. Install the generator mounting bolts.
  85. Tighten
    Tighten the generator mounting bolts to 50 N·m (37 lb ft).


    Object Number: 74066  Size: SH
  86. Install the generator rear bracket.
  87. Install the generator rear bracket bolts.
  88. Tighten
    Tighten the generator rear bracket mounting bolts to 50 N·m (37 lb ft).


    Object Number: 74065  Size: SH
  89. Connect the generator electrical connectors.
  90. Tighten
    Tighten the nut to 13 N·m (10 lb ft).


    Object Number: 187335  Size: SH
  91. Connect the following electrical connectors:
  92. 56.1. Fuel injectors
    56.2. Ignition coil main connectors
    56.3. EVAP solenoid
    56.4. Electric throttle motor
    56.5. Throttle position sensor
    56.6. ECT sensor
    56.7. A/C compressor

    Object Number: 185256  Size: SH
  93. Connect the heater hoses to the water pump.

  94. Object Number: 179301  Size: SH
  95. Connect the radiator hoses to the water pump.

  96. Object Number: 43537  Size: SH
  97. Connect the fuel lines at the fuel rail. (3 and 4)

  98. Object Number: 74075  Size: SH
  99. Install the fuel rail covers.

  100. Object Number: 74089  Size: SH
  101. Install the generator accessory drive belt. (5)

  102. Object Number: 179304  Size: SH
  103. Install the air intake duct and the air cleaner assembly.
  104. Connect the fuel regulator purge line to the air intake duct.

  105. Object Number: 74086  Size: SH
  106. Connect the IAT sensor connector.
  107. Connect the MAF sensor connector.

  108. Object Number: 74059  Size: SH
  109. Connect the negative battery cable.
  110. Tighten
    Tighten the negative battery cable bolt to 15 N·m (11 lb ft).

  111. Fill or top off the engine with oil.
  112. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
  113. Recharge the A/C system. Refer to Air Conditioning (A/C) Charging Using ACR4 in HVAC.
  114. With automatic transmission vehicles use the following steps:
  115. 70.1. With the flywheel hub collar bolt removed, start the engine and warm to operating temperature.

    Idle or drive for at least 10 minutes.

    70.2. Shut off the engine.
    70.3. Allow engine to cool to room temperature.
    70.4. Install hub collar bolt.

    Tighten
    Tighten the flywheel hub collar bolt to 60 N·m (44 lb ft).

  116. Check the engine for problems. Refer to Engine Set-Up and Testing .