GMC T-Series 2007, Owner'S Manual, Page: 191 / 356

Service
Your dealer knows your vehicle best and wants
you to be happy with it. We hope you will go
to your dealer for all your service needs. You
will get genuine GM parts and GM-trained
and supported service people.
We hope you will want to keep your GM vehicle all
GM. Genuine GM parts have one of these marks:
Accessories and Modifications
Adding non-dealer accessories to your vehicle can
affect its performance and safety. Such things as,
airbags, braking, stability, ride and handling,
emissions systems, aerodynamics, durability, and
electronic systems like anti-lock brakes, traction
control, and stability control could be affected.
Some non-dealer accessories could even cause
malfunction or damage to parts and systems and
would not be covered by the vehicle warranty.
GM Accessories are designed to complement
and function with other systems on your vehicle.
Your GM dealer can accessorize your vehicle
using genuine GM Accessories. When you go to
your GM dealer and ask for GM Accessories,
you will know that GM-trained and supported
service technicians will perform the work using
genuine GM Accessories.
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