Throttle Body Cleaning

THROTTLE BODY CLEANING PROCEDURE

REMOVE OR DISCONNECT
Air intake duct.

INSPECT
Throttle body bore and throttle valve plate for deposits. It is necessary to open the throttle valve to inspect all surfaces.

CLEAN
Throttle body bore and throttle valve plate using a clean shop towel with GM Top Engine Cleaner, P/N 1052626 or AC-Delco Carburetor Tune-Up Conditioner, P/N X66-P or equivalent product.

NOTICE: Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.

INSTALL OR CONNECT
1. Air intake duct.
2. Enter diagnostics, select PCM override PS 13.
3. Press the 'COOLER' button.
4. Key 'OFF' for 30 seconds (do not exit diagnostics).
5. Perform TP SENSOR/IDLE LEARN procedure. Refer to Throttle Position Sensor / Idle Learn Procedure. Service and Repair