Operation CHARM: Car repair manuals for everyone.

Traction Control System (TCS)

Traction control will not have any effect on the operation of the vehicle until the control module detects one or both of the rear wheels rotating faster than the front wheels. When the control module detects one or both of the rear wheels rotating faster than the front wheels the EBTCM signals the Engine Control Module (ECM) to reduce the torque to the rear wheels by performing the following:
- By retarding the timing.
- By turning off one or more fuel injectors.
- By preventing transmission downshifting if necessary.

The system will return full control to the operator once the rear wheels begin to rotate at the same speed as the front wheels. The operator may deactivate the TCS if desired. The TCS may be deactivated with the engine running by depressing the electronic traction control switch on the instrument panel. Depressing the electronic traction control switch on the instrument panel will cause the Traction Control (TC) lamp in the instrument cluster to illuminate. The system will remain deactivated until the ignition switch is cycled. Press the electronic traction control switch again to re-activate the system.