Throttle Body Cleaning Procedure

THROTTLE BODY CLEANING PROCEDURE:

1. Remove the air intake duct from the throttle body.

2. Clean the primary throttle bore and the area behind and around the throttle plate using a clean shop towel with GM Top Engine Cleaner (Part Number 1052626) or AC-Delco Carburetor Tune-up Conditioner (Part Number X66-P) or equivalent product. DO NOT USE ANY SOLVENT THAT CONTAINS METHYL ETHYL KETONE.

NOTE: DO NOT CLEAN THE SECONDARY THROTTLE BLADE.

3. Disconnect the negative battery cable to reset learned TPS value.

4. Recheck TPS value with ISC retracted to assure TPS parameter (ED01) is within -1.0 to +1.0 limits.
For warranty purposes, use Labor Operation T6218 at .2 hours.