ground clearance HUMMER H2 2009 Owners Manual

High Mobility Characteristics
The vehicle has a 10 inch (25.4 cm) running ground
clearance (A) and a 9 inch (22.8 cm) axle to ground
clearance (B) while maintaining a low silhouette and a
low center of gravity.
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Assist Steps
If your vehicle has removable side steps, remove the
steps prior to off-roading to give your vehicle more
ground clearance and to prevent damage to the vehicle
from the side steps dragging and/or catching on
obstacles.
Notice:Do not drive off-road with the side steps
attached to your vehicle. You can damage the side
steps and/or your vehicle’s frame if they get caught
or drag against an obstacle. This damage would not
be covered by your vehicle’s warranty. Always
remove the side steps prior to any off-road driving.
Driving at Night
Night driving is more dangerous than day driving
because some drivers are likely to be impaired — by
alcohol or drugs, with night vision problems, or by fatigue.
Night driving tips include:
Drive defensively.
Do not drink and drive.
Reduce headlamp glare by adjusting the inside
rearview mirror.
Slow down and keep more space between you and
other vehicles because headlamps can only light up
so much road ahead.
Watch for animals.
When tired, pull off the road.
Do not wear sunglasses.
Avoid staring directly into approaching headlamps.
Keep the windshield and all glass on your vehicle
clean — inside and out.
Keep your eyes moving, especially during turns or
curves.
No one can see as well at night as in the daytime.
But, as we get older, these differences increase.
A 50-year-old driver might need at least twice as much
light to see the same thing at night as a 20-year-old.
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Dolly Towing
The vehicle cannot be dolly towed. If the vehicle must
be towed behind another vehicle, use the dinghy towing
procedure explained previously.
Notice:Dolly towing the vehicle will damage
drivetrain components. Do not dolly tow the vehicle.
Selectable Extended Rear Ride
Height
If the vehicle has this feature it comes as part of the
electronically controlled air suspension system.
The selectable rear ride height allows the rear of the
vehicle to be raised about 2 inches (5 cm) over the
normal ride height. This can be helpful when driving
off-road where more ground clearance may be needed
to clear an obstacle.
The button that controls
this feature is located on
the instrument panel to the
right of the steering wheel.
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If you need to replace any of your wheels, wheel bolts,
wheel nuts, or Tire Pressure Monitor System (TPMS)
sensors, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts, wheel nuts, and TPMS
sensors for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel bolts,
or wheel nuts on your vehicle can be dangerous. It
could affect the braking and handling of your
vehicle, make your tires lose air and make you
lose control. You could have a collision in which
you or others could be injured. Always use the
correct wheel, wheel bolts, and wheel nuts for
replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance, and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-80for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on the vehicle is dangerous.
You cannot know how it has been used or how far
it has been driven. It could fail suddenly and
cause a crash. If you have to replace a wheel, use
a new GM original equipment wheel.
Tire Chains
Notice:Use tire chains only where legal and only
when you must. Use chains that are the proper size
for the vehicle’s tires. Install them on the tires of
the rear axle. Do not use chains on the tires of the
front axle. Tighten them as tightly as possible
with the ends securely fastened. Drive slowly and
follow the chain manufacturer’s instructions. If
you can hear the chains contacting the vehicle, stop
and retighten them. If the contact continues, slow
down until it stops. Driving too fast or spinning the
wheels with chains on will damage the vehicle.
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