1997 GMC Suburban Owner's Manual - Page 219

' A CAUTION: If'you don't shift down, your brakescould get so hot that they wouldn't work well. You would then havepoor brakingor even none going down a You could crash. Shift down let your engine to assist yourbrakes on a steepdownhill slope. I hill. I 0 Know how to go uphill. You may want to shd%down to a lower gear. The lower gears help cool your engine and transmission, and you can climb the better. hill Stay in your own lane when driving on two-lane roads in hills or mountains.Don't swing wide or cut of across the center the road. Drive at speeds that let you stay in your own lane. As you go over the top a hill, be alert. There of could be something in your lane,likeastalled car or an accident. You may see highway signs on mountains that warn of special problems.Examples are long grades, passing or no-passing zones, a fallingrocks area or winding roads. Be alert to these take and appropriate action. I A CAU 1ION: Coasting downhill inNEUTRAL (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 i. l have poor braking oreven none going down a h l You could crash. Always have your engine running and your vehicle in gear when you go downhill. 4-37