Notice: Do not subject a throttle body assembly which contains the following components to an immersion cleaner or a strong solvent:

Clean the throttle body bore and throttle valve plate on the vehicle using a clean shop towel with GM Top Engine Cleaner, P/N 1052626 or AC-Delco Carburetor Tune-Up Conditioner, P/N X66P, or equivalent. Remove and disassemble the throttle body for cleaning if the deposits are excessive. Refer to Idle Air Control Valve Replacement for IAC valve removal and Throttle Position Sensor Replacement for TP sensor removal. After disassembly, clean the throttle body using a parts cleaning brush. DO NOT immerse the throttle body in any cleaning solvent.

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.

1. Disconnect the negative battery cable.
2. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.



3. Remove the air cleaner outlet retaining nut (1).
4. Remove the air cleaner outlet duct (2) from the throttle body assembly.



5. Disconnect the IAT sensor harness connector.



6. Loosen the air cleaner outlet duct from the MAF sensor.
7. Remove the air cleaner outlet duct.



8. Remove the air cleaner outlet duct adapter stud.



9. Remove the cruise control cable.



10. Remove the accelerator cable.
11. Remove the stud and nuts retaining the accelerator control cable bracket and position bracket aside.



12. Disconnect the IAC valve harness connector.



13. Disconnect the TP sensor harness connector.



14. Remove the throttle body retaining studs.



15. Remove the throttle body assembly.
16. Discard the throttle body seal.

1. Clean the gasket surface on the intake manifold.



2. Install the throttle body assembly with a new seal.




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. Install the throttle body assembly retaining studs.

Tighten
Tighten the studs to 9 N·m (80 lb in).




4. Install the air cleaner outlet duct adapter stud.

Tighten
Tighten the stud to 8 N·m (72 lb in).




5. Connect the TP sensor harness connector.



6. Connect the IAC valve harness connector.
7. Install the accelerator control cable bracket using the fasteners.

Tighten
Tighten the fasteners to 12 N·m (108 lb in).





Important: Make sure the accelerator and the cruise control cables do not hold the throttle open.

8. Install the accelerator cable.



9. Install the cruise control cable.



10. Install the air cleaner outlet duct to the MAF sensor.



11. Connect the IAT sensor harness connector.



12. Install the air cleaner outlet duct (2) on the throttle body assembly.
13. Tighten the retaining nut (1).

Tighten
Tighten the nut 2 N·m (18 lb in).

14. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
15. Connect the negative battery cable.

Important: The accelerator pedal should operate freely without binding between full and closed throttle.

16. Check the accelerator pedal for proper operation.