Hummer H3T Owner's Manual page 34

04AKENG59_H3T.fm Page 34 Thursday, July 31, 2008 12:07 PM
Instrumentation and Controls
Problems with the system may be
detected before they are apparent.
Have it checked right away.
If the light stays on, you may be
able to correct the malfunction by
making sure the fuel cap is proper-
ly installed, if you have just refilled
the tank with fuel.
NOTICE
If you keep driving your vehicle
with this light on, after a while,
your emission controls may not
work as well, your fuel economy
may not be as good and your
engine may not run as smooth-
ly. This could lead to costly
repairs that may not be covered
by your warranty.
. . . 34
NOTICE
(Continued)
Modifications made to the
engine, transmission, exhaust,
intake or fuel system of your
vehicle or the replacement of
the original tires with other
than those of the same Tire
Performance Criteria can affect
your vehicle's emission controls
and may cause this light to
come on. Modifications to
these systems could lead to
costly repairs not covered by
your warranty.
See "Accessories and Modifica-
tions" for more information.
In order for your vehicle to pass an
inspection of its emission control
equipment, the Malfunction Indi-
cator Light must be working prop-
erly and must be off.
If you have recently replaced the
battery in your vehicle, or if the
battery has run down, the vehicle's
on-board diagnostic system may
determine that the vehicle is not
ready for inspection. It may take
several days of routine driving in
order for the diagnostic system to
have enough data for the inspec-
tion.