1995 GMC Jimmy Owner's Manual - Page 185

Know how to go uphill. You may want to shift down to a lower gear. The lower gears help cool your engine and transmission, and you can climb the hill better. 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. As you go over the top of a hill, be alert. There could be something in your lane, likea stalled car oran accident. You may see highway signs on mountains that warn of special problems, Examples are long grades, passing or no-passing zones, a falling rocks area, orwinding roads. Be alert to these and take appropriate action. 4-31