Stabilitrak® includes an additional level of control to the EBTCM. Stabilitrak® monitors the wheel speeds, lateral acceleration and steering sensor inputs in order to calculate a desired yaw rate and compare the desired yaw rate to the actual yaw rate reported by the yaw rate sensor. Steering maneuvers may cause the desired yaw rate to differ from the reported yaw rate by some amount. This difference may result from the following factors:
Stabilitrak® tries to bring these yaw rates into agreement by selectively applying the front wheel brakes. This is known as active brake control (ABC). If wheel slip rates are excessive, traction control may activate in order to reduce power.
The following are 2 types of Stabilitrak®:
The ICCS2 uses normal force information from the CVRSS module in order to detect rough road conditions in order to help enhance vehicle braking.
The ICCS3 does not use normal force information from the CVRSS module in order to detect rough road conditions in order to help enhance vehicle braking. The ICCS3 is used on vehicles that are not equipped with CVRSS.