GMC 1994 Yukon Owner's Manual page 181

Stalling on an Incline
If your vehicle stalls when you're crossing an incline, be sure you (and yo1
passengers) get out on the uphill side, even if the door there is harder to
open. If you get out on the downhill side and the vehicle starts to roll over,
you'll be right in its path.
If you have to walk
down the slope, stay
out of the path the
vehicle will take if it
does roll over.
Driving In Mud, Sand, Snow, Or Ice
When you drive in mud, snow or
sand, your wheels won't get good traction.
You can't accelerate as quickly, turning is more difficult, and you'll need
longer braking distances.
It's best to use a low gear when you're in mud
-
the deeper the mud, the
lower the gear. In really deep mud, the idea is to keep your vehicle moving
so you don't get stuck.
When you drive on sand, you'll sense a change in wheel traction. But it will
depend upon how loosely packed the sand is. On loosely packed sand (as on
beaches or sand dunes) your tires will tend to sink into the sand. This has an
effect on steering, accelerating, and braking. You may want to reduce the air
pressure in your tires slightly when driving on sand. This will improve
traction.
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