GMC SIERRA 1994 Manual page 196

Know how to go uphill. You may want to shift down to a lower gear.
The lower gears help cool your engine and
,
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
0
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, or winding roads. Be alert to these and take
appropriate action.
your lane, like a stalled car or an accident.
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