GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 43828 Ball Joint Separator
    • J 45341 Rear Wheel Drive Shaft Removal Tool
    • SA91100C Tie Rod Separator
    • SA9127E Gage Bar Set
    • SA9805E Fuel Line Separator

Removal Procedure


    Object Number: 951451  Size: SH

    Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

  1. Disconnect the negative battery cable.
  2. Remove the battery cover and battery.

  3. Object Number: 963963  Size: SH
  4. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.0L (L81).

  5. Object Number: 951469  Size: SH
  6. Remove the underhood fuse block (UHFB) fuse cover by separating the clips on each side.
  7. Remove the UHFB fuse cover.
  8. Remove the inner UHFB fuse cover.
  9. Loosen the 3 connector through bolts at the top of the UHFB.
  10. Remove the battery and electronic power steering feed wire connection nut and remove the wire from the UHFB stud.
  11. Release the tabs on each side of the UHFB with a screwdriver.
  12. Raise the UHFB from the connectors. Disconnect the side electrical connectors.
  13. Remove the UHFB from the vehicle.
  14. Remove the battery cable and harness attachment clips on the side of the battery tray/UHFB bracket assembly.
  15. Remove the main connectors from the UHFB housing.
  16. Lay the battery positive cable over the engine. The battery cables will be removed with the powertrain assembly.
  17. Disconnect the electrical connectors at the transaxle controller (TCM) near the brake the booster.
  18. Disconnect the electrical connector for the rear O2 sensor and cut the tie strap to the heater hoses.
  19. Remove the vacuum hose from the check valve from the brake booster and lay across the engine.
  20. Disconnect the main engine harness (gray connector) and lay over the engine assembly. This will allow the engine harness to be removed with the powertrain.
  21. Remove the UHFB and battery tray bolts.
  22. Remove the UHFB and the battery tray and ground wire.
  23. Disconnect the shiftier cable from the PRNDL switch by using a screwdriver. Slightly pry between the shiftier cable plastic retainer and the PRNDL switch.
  24. Drain the coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
  25. Disconnect the upper radiator hose at the engine cylinder head.
  26. Disconnect the lower radiator hose at the radiator.
  27. Disconnect the De-gas hose at the surge tank.
  28. Disconnect the surge hose at the bottom of the surge tank.
  29. Disconnect the heater hoses from the heater core at the front of the dash.

  30. Object Number: 952269  Size: SH
  31. Relieve the fuel system pressure using the SA9127E Refer to Fuel Pressure Relief
  32. Disconnect the SA9127E after the pressure has been relieved.
  33. Disconnect the fuel transfer line at the quick connect from the fuel line using the SA9805E or equivalent.
  34. Disconnect the purge hoses at the purge solenoid.
  35. Important: The Radiator/condenser/fan assembly will stay in the vehicle during the engine removal.

  36. Using the long tie straps, secure the radiator/condenser fan assembly to the body.

  37. Object Number: 960236  Size: SH
  38. Perform an evacuation of the A/C system.
  39. Disconnect the A/C transducer and compressor.
  40. Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

  41. Raise the vehicle.

  42. Object Number: 933764  Size: SH
  43. Remove the front LH wheel . Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  44. Important: A piece of hardwood should be used between the transaxle case and the cradle assembly. This wood will support the transaxle when the LH mount bolts are removed.

  45. Install a piece of hardwood 1 inch X 2 inch X 4 inch between the transaxle case and the engine cradle assembly.
  46. Remove the front RH wheel and tire assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  47. Remove the wheel inner splash shield.
  48. Remove the compressor and support the A/C line.
  49. Remove the push-pins that retain the air deflector assembly to the cradle.
  50. Important: When the transaxle lines are removed, the new seals must be installed into the transaxle to prevent the potential for a leak.

    Important: Fluid will leak when the lines are disconnected. Place a dip pan collect the transaxle oil.

  51. Disconnect the transaxle lines from the transaxle.

  52. Object Number: 933620  Size: SH
  53. Remove the exhaust manifold to pipe flange bolts.
  54. Remove the exhaust pipe to muffler pipe nuts.
  55. Remove the converter pipe assembly and support the muffler and pipe assembly.

  56. Object Number: 928930  Size: SH
  57. Remove the propshaft bolts at the power take unit (PTU).
  58. Remove the propshaft bolt at the rear axle assembly.
  59. Remove the propshaft support bracket to body bolts.
  60. Remove the propshaft assembly.
  61. Remove the shiftier cable bracket assembly nut and free the bracket with cable from the transaxle.
  62. Remove the steering gear to intermediate shaft bolt.

  63. Object Number: 854972  Size: SH
  64. Remove the tie rod to knuckle nuts.

  65. Object Number: 932518  Size: SH
  66. Separate the tie rod assemblies form the knuckle assemblies using the SA91100C , or equivalent.
  67. Remove the lower control arm cotter pins and nuts to knuckle assembly.
  68. Separate the lower controls arms to knuckle assemblies by use the J 43828 , or equivalent.

  69. Object Number: 927949  Size: SH

    Important: The stabilizer links will stay in the vehicle connected to the strut assembly on engine removal.

  70. Remove the lower stabilizer link nuts to stabilizer bar.

  71. Object Number: 931484  Size: SH
  72. Disconnect the LH axle shaft assembly from the transaxle.

  73. Object Number: 931473  Size: SH
  74. Disconnect the RH shaft assembly from the intermediate drive shaft using the J 45341 , or equivalent, with the appropriate slide tool.
  75. Support the axle shaft by using tie straps.
  76. Lower the vehicle.
  77. Remove the RH engine mount to engine bracket bolts. The engine should rest on wood blocks.
  78. Remove the LH transaxle mount to transaxle bolts. The transaxle should rest on wood blocks.
  79. Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

  80. Raise the vehicle.
  81. Position the engine support table under the powertrain assembly.
  82. Important: Blocks of wood can be used between the front of the cradle and oil pan to table to level assembly during removal.

  83. With the table positioned, fully raise the table to contact with the powertrain assembly.
  84. Remove the cradle-to-body bolts.
  85. Important: When lowering the engine/transaxle assembly, verify all brake lines, shiftier cable and other components are free during removal.

  86. Lower the engine table and raise the body on a hoist until the engine/transaxle and cradle assembly is free from the vehicle.

Installation Procedure

  1. With the powertrain supported on a jacking table, raise the powertrain into position.
  2. Notice: If the radiator assembly is not properly positioned to the cradle, damage could occur.

  3. Raise the powertrain assembly into position. Align the lower radiator alignment pin with the cradle assembly.
  4. Notice: Refer to Fastener Notice in the Preface section.

    Important: The cradle-to-body bolts are one-time use fasteners and should be discarded after removal.

  5. Position the cradle guide pints into location and install new cradle-to-body bolts.
  6. Tighten
    Tighten the cradle-to-body bolts to 155 N·m (114 lb ft).

  7. Lower the vehicle.
  8. Install the RH engine mount to engine bracket bolts.
  9. Tighten
    Tighten the RH engine mount-to-engine bracket bolts to 50 N·m (37 lb ft).

  10. Install the LH transaxle mount to transaxle bolts.
  11. Tighten
    Tighten the LH engine mount to transaxle bolts to 50 N·m (37 lb ft).

  12. Lower the vehicle.
  13. Remove the wood blocks between the cradle and the powertrain.
  14. Important: Care should be used to avoid damaging the transaxle and bearing races when the axles are seated.

  15. Swing the axle shafts into position and fully seat in the transaxle and bearing. Slight taps may be required on the back of the CV axle housing.
  16. Position the strut assemblies onto the lower control arms.

  17. Object Number: 931484  Size: SH
  18. Install the lower control arm nut.
  19. Verify the axles are fully seated.
  20. Position the stabilizer link into position and install the nut.
  21. Install the stabilizer nut.
  22. Tighten
    Tighten the stabilizer link-to-strut to 65 N·m (48 lb ft).

  23. Install the tie rod end into the strut knuckle assembly.
  24. Tighten
    Tighten the tie rod-to-knuckle assembly nut to 50 N·m (37 lb ft).

  25. Secure the brake line-to-cradle assembly.
  26. Install the steering shaft-to-intermediate shaft.
  27. Install the steering shaft-to-intermediate shaft bolt.
  28. Tighten
    Tighten the steering shaft-to-rack bolt to 34 N·m (25 lb ft).


    Object Number: 928930  Size: SH
  29. Install the propshaft into position. Hand-tighten the center bearing nuts.
  30. Install the propshaft into position.
  31. Install the propshaft-to-PTU bolts.
  32. Tighten
    Tighten the propshaft-to-PTU bolts to 25 N·m (19 lb ft).

  33. Install the propshaft into the rear axle assembly.
  34. Install the propshaft-to-rear axle bolts.
  35. Tighten
    Tighten the propshaft-to-rear axle bolts to 50 N·m (37 lb ft).

  36. Tighten the propshaft support bearing bolts.
  37. Tighten
    Tighten the propshaft support bearing bolts to 25 N·m (19 lb ft).

  38. Install the propshaft support strap.
  39. Tighten
    Tighten the propshaft support strap to 25 N·m (19 lb ft).

  40. Install the shiftier cable bracket-to-transaxle.
  41. Connect the transaxle lines-to-transaxle.
  42. Tighten

        • Tighten the transaxle cooler lines-to-transaxle stud to 20 N·m (15 lb ft).
        • Tighten the propshaft support strap to 25 N·m (19 lb ft).

    Object Number: 933620  Size: SH
  43. Install the down pipe-to-intermediate pipe assembly.
  44. Hand-tighten the nuts.
  45. Install the gasket and down pipe-to-exhaust manifold.
  46. Tighten

        • Tighten the down pipe-to-exhaust manifold nuts to 30 N·m (22 lb ft).
        • Tighten the down pipe-to-intermediate pipe nuts to 30 N·m (22 lb ft).
  47. Route the O2 harness into position at the heat shield.
  48. Install the A/C hoses-to-compressor.
  49. Connect the A/C compressor harness.
  50. Connect the A/C pressure transducer.
  51. Attach the front air deflector-to-cradle assembly.

  52. Object Number: 933764  Size: SH
  53. Install the right and left inner splash shields.
  54. Install the front wheels. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  55. Lower the vehicle.
  56. Connect the shiftier cable to the PRNDL switch.
  57. Adjust the PRNDL switch. Refer to Park/Neutral Position Switch Adjustment in Automatic Transaxle -  AF33-5.
  58. Connect the heater hoses from the heater core at the front of the dash.
  59. Connect the purge hose at the purge solenoid.
  60. Connect the fuel transfer line at the quick connect to fuel line.
  61. Connect the surge hose at the bottom of the surge tank.
  62. Connect the De-gas hose at the surge tank.
  63. Connect the lower radiator hose at the coolant pipe.
  64. Connect the upper radiator hose at the engine cylinder head.
  65. Install the engine ground to body bolt.
  66. Tighten
    Tighten the engine ground-to-body bolt to 20 N·m (15 lb ft).

  67. Install the UHFB and battery tray.
  68. Install the UHFB and battery tray bolts.
  69. Tighten
    Tighten the battery tray bolts to 16 N·m (11 lb ft).

  70. Route the engine harness into position and install the main engine and body harness connectors into the UHFB housing.
  71. Snap the connectors into position in the UHFB.
  72. Connect both electrical connectors underneath the UHFB.
  73. Important: Ensure the engine and body harness are properly positioned to avoid damage to the harness.

  74. Install the UHFB into the battery box while aligning the UHFB with the connectors.
  75. Snap the UHFB into position.
  76. Tighten the UHFB connector bolts.
  77. Tighten
    Tighten the UHFB connector bolts to 20 N·m (15 lb ft).

  78. Install the battery and electronic power steering (EPS) feed wire to the UHFB stud and tighten the nut.
  79. Tighten
    Tighten the battery positive-to-UHFB nut to 15 N·m (11 lb ft).

  80. Install the UHFB fuse cover into position.
  81. Connect the electrical connectors to the TCM

  82. Object Number: 951451  Size: SH
  83. Install the battery cable and harness attachment clips on the side of the battery tray/UHFB bracket assembly.
  84. Install the battery and cover.
  85. Install the brake vacuum hose into the booster.
  86. Connect the rear O2 sensor connector.
  87. Tighten the clamp at the air cleaner assembly.
  88. Connect the negative battery cable.
  89. Check for the proper oil level. Refer to Engine Oil and Oil Filter Replacement
  90. Start the engine and fill the transaxle fluid. Refer to Transmission Fluid Replacement in Automatic Transaxle -  AF 33-5.
  91. Notice: All entrapped air must be purged from the powertrain cooling system before the final coolant level can be determined. Proper coolant level is critical to avoid engine damage.

  92. Fill engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
  93. Check for leaks.
  94. If excessive engine idle vibration is noted, the engine mount inspection procedure should be performed. Refer to Engine Mount Inspection .
  95. Charge the A/C system.
  96. Verify the wheel adjustment is within specifications.