Hummer 2003 H2 Owner's Manual page 255

Log Crossing. Using the proper technique, the
HUMMER H2 will cross logs up to 12 inches (30.5 cm)
in diameter. Approach the log at approximately a
15 _ angle (A) with the transfer case in 4LO Lock and
"walk" the HUMMER H2 over, one tire at a time.
As with all obstacles, face your tires perpendicular to the
object for best traction and tire life. It may be necessary
to modulate your brake pedal and accelerator to avoid
-
spin out. Ease the vehicle down from the log with
your brake.
Driving on Off-Road Hills
-
Off road driving often takes you up, down or across a
hill. Driving safely on hills requires good judgment and
an understanding of what your vehicle can and can't do.
There are some hills that simply can't be driven,
no matter how well built the vehicle.
CAUTION:
Many hills are simply too steep for any vehicle.
If you drive up them, you will stall. If you drive
down them, you can't control your speed. If you
drive across them, you will roll over. You could be
seriously injured or killed. If you have any doubt
about the steepness, don't drive the hill.
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