If A Tire Goes Flat - Hummer H2 2010 Owner's Manual

The accessory inflator hose also has a built-in air
pressure gauge. As soon as you start to inflate an
object it will automatically read the current
pressure.
4. Press and release the switch to turn the accessory
inflator on. The indicator light will remain on while
the inflator is running.
When you are finished using the inflator, press and
release the switch to turn it off. Place the inflator kit
tools and the hose back in the pouch.
If your vehicle is equipped with the air suspension
system, load leveling will not function with the inflator
hose attached to the inflator outlet.
WARNING:
Inflating something too much can make it explode,
and you or others could be injured. Be sure to
read the inflator instructions, and inflate any object
only to its recommended pressure.

If a Tire Goes Flat

It is unusual for a tire to blowout while you are driving,
especially if you maintain your vehicle's tires properly.
If air goes out of a tire, it is much more likely to leak out
slowly. But if you should ever have a blowout, here are
a few tips about what to expect and what to do:
If a front tire fails, the flat tire creates a drag that pulls
the vehicle toward that side. Take your foot off the
accelerator pedal and grip the steering wheel firmly.
Steer to maintain lane position, and then gently brake to
a stop well out of the traffic lane.
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