Procedures

Throttle Body Service

1. Remove the fuel injector sight shield.
2. Remove the air cleaner outlet duct.
3. Inspect the throttle body bore and the throttle body plate for deposits. You will need to open the throttle plate in order to inspect all surfaces.
4. Clean the throttle body bore and the throttle plate 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 product.
5. Install the air cleaner outlet duct.
6. Install the fuel injector sight shield.