Throttle Actuator Control (TAC) System Description: Notes

Fig 1: TAC

Courtesy of GENERAL MOTORS CORP.

The 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 as well.

The TAC system components include the following:

• The accelerator pedal position (APP) sensor
• The throttle body
• The TAC module
• The powertrain control module (PCM)

Each of these components interface together to ensure accurate calculations and control of the TP.