Throttle Body Inspection and Cleaning (LF3)
- Remove the charge air cooler cover. Refer to Charge Air Cooler Cover Replacement (LF3) .
- Inspect the throttle body bore and the throttle valve plate for deposits. You will need to open the throttle valve in order to inspect all surfaces.
- Clean the throttle body bore and the throttle valve plate using a clean shop towel with GM Top Engine Cleaner. Refer to Adhesives, Fluids, Lubricants, and Sealers .
- Install the charge air cooler cover. Refer to Charge Air Cooler Cover Replacement (LF3) .
- Perform the Throttle/Idle Learn procedure. Refer to Throttle or Idle Learn .
WARNING:
Turn OFF the ignition before inserting fingers into the throttle bore. Unexpected movement of the throttle blade could cause personal injury.
CAUTION:
Do not insert any tools into the throttle body bore in order to avoid damage to the throttle valve plate.
CAUTION:
Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.