GM Service Manual Online
For 1990-2009 cars only

Throttle Body Assembly Replacement Export

Removal Procedure


    Object Number: 104644  Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
  2. 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.

  3. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  4. Remove the retaining bolt from the air cleaner resonator.
  5. Loose the duct clamp at the resonator.
  6. Remove the air cleaner resonator from the vehicle.
  7. Notice: Do not damage the MAF sensor screen. A damaged screen could restrict airflow and lead to a driveability concern.

  8. Loosen the duct clamp at the MAF sensor.
  9. Disconnect the IAT sensor connector (1).
  10. Loosen the duct clamp at the air filter cleaner housing cover (3).

  11. Object Number: 154945  Size: SH
  12. Remove the MAF sensor (5). Refer to Mass Airflow Sensor Replacement .

  13. Object Number: 154945  Size: SH
  14. Disconnect the transaxle vent hose (4) from the accelerator controls cable bracket.

  15. Object Number: 154952  Size: SH
  16. Disconnect the cruise control cable (2).
  17. Disconnect the accelerator control cable (3).

  18. Object Number: 104766  Size: SH
  19. Remove the cruise control cable (2) from the accelerator controls cable bracket (1).
  20. Remove the accelerator controls cable (3) from the accelerator controls cable bracket (1).

  21. Object Number: 154945  Size: SH
  22. Disconnect the TP sensor electrical connector (6).
  23. Disconnect the IAC valve electrical connector (1).

  24. Object Number: 154967  Size: SH
  25. Disconnect the throttle body coolant hoses (1) from the throttle body.

  26. Object Number: 18918  Size: SH
  27. Remove the bolts retaining the accelerator controls cable bracket.
  28. Remove the accelerator controls cable bracket.

  29. Object Number: 19023  Size: SH
  30. Remove the following components:
  31. • The throttle body retaining bolts
    • The throttle body (1)
    • The gasket (2)
  32. Clean any gasket material from the throttle body spacer (3).

Installation Procedure

Important: The outlet of the air cleaner assembly and the MAF sensor inlet duct must line up when completely installed. Misalignment may cause incorrect airflow readings resulting in MIL illumination or a driveability concern.

    Important: Do Not Reuse the old throttle body gasket.


    Object Number: 19023  Size: SH
  1. Install the throttle body (1) and the gasket (2) with the retaining bolts.
  2. Tighten
    Tighten the throttle body attaching bolts to 12 N·m (106 lb in).

  3. Install the accelerator controls cable bracket.
  4. Install the mounting bolts to the accelerator controls cable bracket.

  5. Object Number: 154967  Size: SH
  6. Connect the throttle body coolant hoses (1) at the throttle body.

  7. Object Number: 154945  Size: SH
  8. Connect the IAC valve electrical connector (1).
  9. Connect the TP sensor electrical connector (6).

  10. Object Number: 104766  Size: SH
  11. Install the accelerator cable (3) to the accelerator controls cable bracket (1).
  12. Install the cruise control cable (2) to the accelerator controls cable bracket (1).

  13. Object Number: 154952  Size: SH
  14. Connect the accelerator controls cable (3) at throttle body lever (1).
  15. Connect the cruise control cable (2) at throttle body lever (1).

  16. Object Number: 154945  Size: SH
  17. Install the transaxle vent hose (4) to the accelerator controls cable bracket.

  18. Object Number: 19022  Size: SH
  19. Install the MAF sensor. Refer to Mass Airflow Sensor Replacement .
  20. Tighten
    Tighten the MAF sensor bolts to 8 N·m (71 lb in).


    Object Number: 104644  Size: SH
  21. Tighten the air intake duct (2) clamp at the air cleaner housing cover (3).
  22. Tighten
    Tighten the clamp to 3 N·m (27 lb in).


    Object Number: 104644  Size: SH
  23. Connect the IAT sensor connector (1).
  24. Tighten the duct clamp (2) at the MAF sensor.
  25. Tighten
    Tighten the clamp to 3 N·m (27 lb in).

  26. Install the air cleaner resonator to the vehicle.
  27. Tighten the duct clamp at the resonator.
  28. Tighten
    Tighten the clamp to 3 N·m (27 lb in).

  29. Install the air cleaner resonator bolt.
  30. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
  31. 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.

  32. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

  33. Object Number: 20426  Size: SH
  34. Reinstall the intake manifold sight shield. Refer to Intake Manifold Removal in Engine Mechanical.
  35. Tighten
    Tighten the nuts to 3 N·m (27 lb in).