Hummer 2007 H3 - Manual (Page 267)

• Surface conditions can be a problem when
you drive across a hill. Loose gravel, muddy
spots, or even wet grass can cause your tires
to slip sideways, downhill. If the vehicle slips
sideways, it can hit something that will
trip it — a rock, a rut, etc. — and roll over.
• Hidden obstacles can make the steepness of
the incline even worse. If you drive across a
rock with the uphill wheels, or if the downhill
wheels drop into a rut or depression, your
vehicle can tilt even more.
For reasons like these, you need to decide
carefully whether to try to drive across an incline.
Just because the trail goes across the incline
does not mean you have to drive it. The last
vehicle to try it might have rolled over.
{ CAUTION:
Driving across an incline that is too
steep will make your vehicle roll over.
You could be seriously injured or killed.
If you have any doubt about the
steepness of the incline, do not drive
across it. Find another route instead.
Q:
What if I am driving across an incline
that is not too steep, but I hit some
loose gravel and start to slide downhill.
What should I do?
A:
If you feel your vehicle starting to slide
sideways, turn downhill. This should help
straighten out the vehicle and prevent the side
slipping. However, a much better way to
prevent this is to get out and “walk the course”
so you know what the surface is like before
you drive it.
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