Engine reduced power mode! GM cars and truck’s failed throttle body! #auto #trucks #chevy #tahoe
Diagnosing an "engine reduced power" message on a Chevy Tahoe model years common for these 07-13 gm trucks, also some gm cars as well. Using a bi-directional scan tool to monitor the TPS actual position and desired pos while I am increasing the percentage of throttle by commanding it open with the scan tool. As you can hear the gear mechanism inside the case of the throttle body sounds like its skipping and griding. along with incorrect miss matched values showing on the data list, recommend new throttle body!