Throttle Body Assembly Replacement Domestic

Notice: Do not damage the MAF sensor screen. A damaged screen could restrict airflow and lead to a driveability concern.

1. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.



2. Remove the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.

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 intake manifold sight shield. Refer to Intake Manifold Removal in Engine Mechanical.
5. Disconnect the IAT sensor connector (1) from the IAT sensor.
6. Loosen the air intake duct clamp at the air cleaner cover (3).



7. Disconnect the MAF sensor electrical connector (2) from the MAF sensor (5).
8. Remove the bolts from the MAF Sensor.
9. Remove the intake air duct and MAF sensor as an assembly.



10. Disconnect the transaxle vent hose (4) from the clip (3) attached to the accelerator controls cable bracket.



11. Disconnect the cruise control cable (2) from the accelerator controls cable bracket (1).



12. Disconnect the accelerator control cable (3) from throttle body lever (1).
13. Disconnect the cruise control cable (2) from throttle body lever (1).



14. Disconnect the TP sensor electrical connector (6) from the TP sensor (7).
15. Disconnect the IAC valve electrical connector (1) from the IAC valve (8).



16. Disconnect the throttle body coolant hoses (1) from the throttle body.



17. Remove the accelerator controls cable bracket from the throttle body.



18. Remove the throttle body (1) and gasket (2) from the throttle body spacer (3).

Notice: Do not immerse the TP sensor and IAC valve in any type of cleaner. This cleaning method may damage these electronic components.

Notice: Use care when cleaning the old gasket from the aluminum surfaces in order to prevent damage to the sealing surfaces.

Notice: Do not use a cleaner which contains methyl ethyl ketone. This extremely strong solvent may damage components and is not necessary for this type of cleaning.

1. Remove the TP sensor attaching screws (3) from the TP sensor (2).
2. Remove the TP sensor from the throttle body.
3. Remove the IAC valve attaching screws (4) from the IAC valve (1).
4. Remove the IAC valve from the throttle body.
5. Clean the throttle body gasket surfaces.

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.




1. Install the IAC valve (1) to the throttle body.

Tighten
Tighten the screws to 3 N·m (27 lb in).

2. Install the TP sensor (2) to the throttle body.

Tighten
Tighten the screws to 2.3 N·m (20 lb in).

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.

1. Position the new throttle body gasket on throttle body (2).
2. Install the throttle body (1) to throttle body spacer (3) and finger tighten bolts.

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.

3. Reinstall the accelerator controls cable bracket to throttle body spacer.

Tighten
Tighten the throttle body attaching bolts to 12 N·m (106 lb in).




4. Connect the throttle body coolant hoses (1) at the throttle body.



5. Connect the IAC valve electrical connector (1) to the IAC valve (8).
6. Connect the TP sensor electrical connector (6) to the TP sensor (7).



7. Connect the accelerator controls cable (3) at throttle body lever (1).
8. Connect the cruise control cable (2) at throttle body lever (1).



9. Connect the cruise control cable (2) to the accelerator controls cable bracket (1).
10. Connect the accelerator cable (3) to the accelerator controls cable bracket (1).



11. Connect the transaxle vent hose (4) to the clip (3) at the accelerator controls cable bracket.



12. Reinstall the MAF sensor and intake air duct to the throttle body as an assembly.

Tighten
Tighten the MAF sensor bolts to 8 N·m (71 lb. in).




13. Connect the MAF sensor electrical connector (2) to the MAF Sensor (5).



14. Tighten the air intake duct (2) clamp at the air cleaner cover (3).

Tighten
Tighten the clamp to 3 N·m (27 lb in).




15. Connect the IAT sensor connector (1) from the IAT sensor.
16. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
17. Install the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.
18. Check and add coolant as necessary. Long life coolant must meet GM Specification 6277-M. Refer to Engine Cooling System Specifications in Engine Cooling.



19. Reinstall the intake manifold sight shield. Refer to Intake Manifold Removal in Engine Mechanical.

Tighten
Tighten the nuts to 3 N·m (27 lb in).