2009 Chevrolet Equinox Owner's Manual - Page 252

Brake Assist This vehicle has a Brake Assist feature designed to assist the driver in stopping or decreasing vehicle speed in emergency driving conditions. This feature uses the stability system hydraulic brake control module to supplement the power brake system under conditions where the driver has quickly and forcefully applied the brake pedal in an attempt to quickly stop or slow down the vehicle. The stability system hydraulic brake control module increases brake pressure at each corner of the vehicle until the ABS activates. Minor brake pedal pulsations or pedal movement during this time is normal and the driver should continue to apply the brake pedal as the driving situation dictates The Brake Assist feature will automatically disengage when the brake pedal is released or brake pedal pressure is quickly decreased. The STABILITRAK NOT READY message may be displayed in the Driver Information Center (DIC) and the StabiliTrak/Traction Control System (TCS) warning light will come on the instrument panel cluster after first driving the vehicle and exceeding 30 mph 48 (km/h) for 30 seconds. The StabiliTrak system is off until the light has turned off. This could take up to 15 minutes. See DIC Warnings and Messages on page 3-49 for more information. The StabiliTrak/TCS warning light on the instrument panel cluster will flash when the system is operating. StabiliTrak® System The vehicle has the StabiliTrak system, an advanced computer controlled system that helps the driver maintain directional control of the vehicle in difficult driving conditions. This is accomplished by selectively applying any one of the vehicle's brakes and reducing power. The StabiliTrak system comes on automatically whenever the vehicle is started. The system may be heard or felt while it is working. This is normal. This light may also come on after extended heavy braking, indicating the brakes have become too hot to limit wheel spin. 4-6