GMC 1993 Jimmy Owner's Manual page 219

Parking on M I S
Hills and mountains mean spectacular scenery. But please be careful 'where
you stop if you decide to look at the view or take pictures. Look for pull-offs
or parking areas provided for scenic viewing.
Another part of this manual tells how to use your parking brake (see "Parking
Brake" in the Index). But on a mountain or steep hill, you can do one more
thing. You can turn your front wheels to keep your vehicle from rolling
downhill or out into traffic. Here's how:
Parking Downhill
AM470009
Turn your wheels
to
the right.'
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