GMC T-Series 2007 Owner's Manual page 14

Fittings
Gaskets
Grommets
Hoses
Housings
Mounting Hardware
Pipes
Pulleys
Sealing Devices
Springs
Tubes
Wiring
Parts specified in your maintenance schedule that
require scheduled replacement are covered up
to their first replacement interval or the applicable
emission warranty coverage period, whichever
comes first. If failure of one of these parts results
in failure of another part, both will be covered
under the Emission Control System Warranty.
For detailed information concerning specific parts
covered by these emission control systems
warranties, ask your dealer.
14
Replacement Parts
The emission control systems of your chassis
were designed, built, and tested using genuine GM
parts* and the chassis is certified as being in
conformity with applicable federal and California
emission requirements. Accordingly, it is
recommended that any replacement parts used
for maintenance or for the repair of emission
control systems be new, genuine GM parts.
The warranty obligations are not dependent upon
the use of any particular brand of replacement
parts. The owner may elect to use non-genuine
GM parts for replacement purposes. Use of
replacement parts which are not of equivalent
quality may impair the effectiveness of emission
control systems.
If other than new, genuine GM parts are used for
maintenance replacements or for the repair of parts
affecting emission control, the owner should assure
himself/herself that such parts are warranted by
their manufacturer to be equivalent to genuine GM
parts in performance and durability.
* "Genuine GM parts," when used in connection
with GM chassis means parts manufactured by or
for GM, designed for use on GM chassis, and
distributed by any division or subsidiary of GM.