After Programming A Control Module

The powertrain may operate slightly different after a control module software/calibration update. Operating the powertrain through various driving conditions allows the control module to re-learn certain values. The control module must re-learn the following after a software/calibration update:
^ Fuel trim correction
^ Idle air control learned position
^ Automatic transmission shift adapts

Other learned values only re-learn by doing a service procedure.

If a control module is replaced the following service procedures must be performed:
^ The crankshaft variation learn procedure if applicable.
^ The Engine Oil Lite Reset Procedure, if applicable
^ The Idle Learn Procedure, if applicable
^ The Inspection/Maintenance Complete System Set Procedure
^ The Vehicle Theft Deterrent Password Learn Procedure, if applicable
^ The TP sensor learn procedure, if applicable

The Throttle Actuator Control (TAC) system uses vehicle electronics and components to calculate and control the position of the throttle blade. This eliminates the need for a mechanical cable attachment from the accelerator pedal to the throttle body. This system also performs the cruise control functions.

The TAC system include, but are not limited to, the following components:
^ The Accelerator Pedal Position (APP) sensor
^ The throttle body
^ The throttle actuator control (TAC) module
^ The Powertrain Control Module (PCM) These components interface to ensure accurate calculations and control of the throttle position.