1999 GMC Jimmy Owner's Manual - Page 232

yellowblue D Know how to go uphill. You may want to shift down CAUTION: If you don't shift down, your brakes could get so hot that they wouldn't work well. You would then have poor braking or even none going down a hill. You could crash. Shift down to let your engine assist your brakes on a steep downhill slope. to a lower gear. The lower gears help cool your engine and transmission, and you can climb the hill better. D Stay in your own lane when driving on two-lane roads in hills or mountains. Don't swing wide or cut across the center of the road. Drive at speeds that let you stay in your own lane. could be something in your lane, like a stalled car or an accident. warn of special problems. Examples are long grades, passing or no-passing zones, a falling rocks area or winding roads. Be alert to these and take appropriate action. D As you go over the top of a hill, be alert. There D You may see highway signs on mountains that CAUTION: Coasting downhill in NEUTRAL (N) or with the ignition off is dangerous. Your brakes will have to do all the work of slowing down. They could get so hot that they wouldn't work well. You would then have poor braking or even none going down a hill. You could crash. Always have your engine running and your vehicle in gear when you go downhill. 4-36