GM Service Manual Online
For 1990-2009 cars only

With ABS, you can steer and brake at the same time. In many emergencies, steering can help you more than even the very best braking.

Panic Brake Assist

Your vehicle has a Panic Brake Assist feature designed to assist the driver in stopping or decreasing vehicle speed in emergency driving conditions. This feature uses the Electronic Stability Control (ESC) 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 ESC hydraulic brake control module increases brake pressure at each corner of the vehicle until the Antilock Brake System (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 Panic Brake Assist feature will automatically disengage when the brake pedal is released or brake pedal pressure is quickly decreased.