Throttle Position Sensor: Service and Repair

REMOVAL PROCEDURE




1. Disconnect the Intake Air Temperature (IAT) electrical connector and breather tube from the air intake tube.
2. Remove the air intake tube.




3. Disconnect the TP sensor electrical connector.




4. Remove the 2 TP sensor attaching screws.




5. Remove the TP sensor.




6. Remove the TP sensor O-ring.

INSTALLATION PROCEDURE




1. Install the IP sensor O-ring.




2. With the throttle valve in the normal closed idle position, install the TP sensor on the throttle body assembly.

NOTE: Refer to Fastener Notice in Service Precautions.




3. Install the 2 TP sensor attaching screws, using a thread-locking compound on the screws. Loctite(R) 262, GM P/N #1052624, or equivalent should be used.

Tighten
Tighten the TP sensor attaching screws to 2.0 N.m (18 lb in).




4. Connect the TP sensor electrical connector.




5. Reinstall the air inlet tube.
6. Connect the IAT electrical connector and breather tube to the air inlet tube.