Throttle Body Service

REMOVAL PROCEDURE




1. Remove the Intake Air Temperature (IAT) sensor electrical connector (1) from the IAT sensor (2).




2. Remove the air cleaner intake air duct.




3. Remove the snap ring (3) and air inlet screen (2) from the throttle body (1).
4. Inspect the throttle body bore and throttle valve plate for deposit is necessary to open the throttle valve to inspect all surfaces.

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

5. Clean the 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.

INSTALLATION PROCEDURE




1. Install the air inlet screen (2) and the snap ring (3) in to the throttle body (1).




2. Install the air cleaner intake duct.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten
Tighten the air intake tube clamp to 2 N.m (18 lb in).




3. Install the IAT sensor electrical connector (1) to the IAT sensor (2).