GMC 1993 Sonoma Owner's Manual page 201

I
h Y
Coasting downhill in N (Neutral) or with the ignition off
is
dangerous.
our brakes will have to do all the work of slowing down. They could
get so hot that they wouldn't work well. You could crash. Always
have your ignition on and your vehicle in gear when you go downhill.
e
e
e
e
e
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. That way, you won't be
surprised by a vehicle coming toward you in the same lane.
It takes longer to pass another vehicle when you're going uphill. You'll
want to leave extra room to pass. If a vehicle is passing you and
doesn't have enough room, slow down to make it easier for the other
vehicle to get by.
As you go over the top of a hill, be alert. There could be something in
your lane, like a stalled 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 falling rocks
area, or winding roads. Be alert to these and take appropriate action.
Winter driving can present special problems. See "Winter Driving" in the
Index.
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