Throttle Position Sensor: Service and Repair
REMOVAL PROCEDURECAUTION: Refer to Battery Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Disconnect the AT sensor harness connector.
3. Disconnect the breather tube from the air cleaner outlet duct.
4. Remove the wing nut retaining the air outlet duct.
5. Loosen the clamp on the outlet of the MAF sensor.
6. Lift the air cleaner outlet duct from the throttle body and remove the assembly from the MAF sensor.
7. Disconnect the TP sensor harness connector.
8. Remove the throttle body.
9. Remove the mounting screws from the TP sensor.
NOTE: The TP sensor is an electrical component. Do not soak the TP sensor in any liquid cleaner or solvent as damage may result.
10. Remove the TP sensor from the throttle body assembly.
INSTALLATION PROCEDURE
IMPORTANT: Make sure the throttle valve is closed during installation.
1. Place the TP sensor over the throttle shaft and align the TP mounting holes with their corresponding holes in the throttle body assembly.
NOTE: Refer to Fastener Notice in Service Precautions.
IMPORTANT: The screws used to attach the TP sensor are coated with thread locking adhesive. Clean the attaching screw threads and apply thread locking material GM P/N 1052624 or equivalent.
2. Install the TP sensor mounting screws.
Tighten
Tighten the screws to 2.0 N.m (18 lb in).
3. Install the throttle body.
4. Connect the TP sensor harness connector.
5. Install the air cleaner outlet duct.
6. Tighten the air cleaner outlet duct wing nut.
7. Secure the air cleaner outlet duct to the MAF sensor
Tighten
Tighten the air cleaner outlet duct clamp to 4 N.m (35 lb in).
8. Connect the breather tube to the air cleaner outlet duct.
9. Connect the IAT sensor harness connector.
10. Connect the negative battery cable.