The procedure is to disconnect the air intake ducts from the throttle body, inspect the throttle body bore and the throttle valve plate for any deposits, and then clean the throttle body bore and the throttle valve plate by using a clean shop towel with Top Engine Cleaner, GM P/N 1052626 (Canadian P/N 993026) or AC-Delco Carburetor Tune-Up Conditioner, P/N X66-P, or an equivalent product.
By BobGM Specialist
02/11/2022