GMC Hummer H3 2008, Owner'S Handbook Manual

Page: 214 / 343

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Section 3
CROSSING OBSTACLES
Approach Angle
If you encounter a large dip in the
terrain, do not enter straight on.
Enter with an approach angle
between 15°
and 75° .
For very large dips, ditches or small
washes, coast in (with the trans-
mission and transfer case in the
lowest gears) using the engine as a
brake. Then, use the low ranges in
the transmission and transfer case
to power out.
Large Rocks
Roll the tyres over large rocks. Do
not straddle large rocks. Drive over
them, letting the tyre envelop the
rock. The tread of the tyre is thick-
er and tougher than the side wall
of the tyre and is more resilient to
impact than underbody
components.
Log Crossing
Using the proper technique,
the vehicle will cross logs up to
25.4 cm (10 inches) in diameter.
Approach the log at approximate-
ly a 15° angle
with the transmis-
sion in first gear and the transfer
case in Four-Wheel Low Lock, and
"walk" the vehicle over, one tyre at
a time.
It may be necessary to alternate
between your brake pedal and
accelerator to avoid spin-out. Ease
the vehicle down from the log
using your brake.
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