2010 Hummer H3 Owner's Manual - Page 236
2010 Hummer H3 Manual
Page 236 highlights
9-52 Driving and Operating When the system activates, a chime will sound and the HSA ON message will be displayed. The brakes will automatically be held for a maximum of two seconds while the driver switches from applying the brakes to pushing the accelerator pedal. When Hill Start Assist is active, the driver might experience a "hard brake pedal." This is normal and does not affect safe brake operation. After activation, the system will automatically disengage when the accelerator pedal is pressed. Do not turn off the ignition while this feature is active. The Hill Start Assist feature may not disengage fully if the ignition is turned off. The system will not activate with the transmission in P (Park), when traveling down a steep grade in a drive gear, or if the vehicle is facing uphill with the transmission in R (Reverse). 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. Ride Control Systems Traction Control System (TCS) The vehicle has a Traction Control System (TCS) that limits wheel spin. This is especially useful in slippery road conditions. The system operates only if it senses that any of the wheels are spinning or beginning to lose traction. When this happens, TCS reduces engine power. The system may be heard or felt while it is working. This is normal and does not mean there is a problem with the vehicle. TCS can operate on dry roads under some conditions. When this happens, the system may be heard working or a reduction in acceleration may be noticed. This is normal and does not mean there is a problem with the vehicle. Hill Start Assist (HSA) This vehicle has a Hill Start Assist (HSA) feature, which may be useful when the vehicle is stopped on a grade. This feature is designed to prevent the vehicle from rolling, either forward or rearward, during vehicle drive off. After the vehicle is stopped on an incline, quickly push the brake pedal to the floor to activate Hill Start Assist.