Throttle Actuator Control Module
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
A malfunction in Throttle Actuator Control (TAC) module can set a DTC. For testing procedures and specifications, perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in SELF-DIAGNOSTICS - 2.2L VUE article or SELF-DIAGNOSTICS - 3.0L VUE article.