2009 Hummer H3T Owner's Manual - Page 213

Driving Your Vehicle 4-31 { CAUTION Coasting downhill in N (Neutral) or with the ignition off is dangerous. The brakes will have to do all the work of slowing down and they could get so hot that they would not work well. You would then have poor braking or even none going down a hill. You could crash. Always have the engine running and the vehicle in gear when going downhill. • Pay attention to special road signs (falling rocks area, winding roads, long grades, passing or no-passing zones) and take appropriate action. See Off-Road Driving on page 4-13 for information about driving off-road. to spin and makes the surface under the tires slick, so there is even less traction. Try not to break the fragile traction. If you accelerate too fast, the drive wheels will spin and polish the surface under the tires even more. The Traction Control System (TCS) on page 4-7 improves the ability to accelerate on slippery roads, but slow down and adjust your driving to the road conditions. When driving through deep snow, turn off the traction control system to help maintain vehicle motion at lower speeds. The Antilock Brake System (ABS) on page 4-5 improves vehicle stability during hard stops on a slippery roads, but apply the brakes sooner than when on dry pavement. Winter Driving Driving on Snow or Ice Drive carefully when there is snow or ice between the tires and the road, creating less traction or grip. Wet ice can occur at about 32°F (0°C) when freezing rain begins to fall, resulting in even less traction. Avoid driving on wet ice or in freezing rain until roads can be treated with salt or sand. Drive with caution, whatever the condition. Accelerate gently so traction is not lost. Accelerating too quickly causes the wheels • Stay in your own lane. Do not swing wide or cut across the center of the road. Drive at speeds that let you stay in your own lane. • Top of hills: Be alert - something could be in your lane (stalled car, accident).