Black plate (4,1)Cadillac STS Owner Manual - 2011ServiceFor service and parts needs, visit your dealer. Youwill receive genuine GM parts and GM-trained andsupported service people.Genuine GM parts have one of these marks:Accessories and ModificationsWhen non‐dealer accessories are added to the vehicle,they can affect vehicle performance and safety,including such things as airbags, braking, stability, rideand handling, emissions systems, aerodynamics,durability, and electronic systems like antilock brakes,traction control, and stability control. Some of theseaccessories could even cause malfunction or damagenot covered by the vehicle warranty.Damage to vehicle components resulting from theinstallation or use of non‐GM certified parts, includingcontrol module modifications, is not covered under theterms of the vehicle warranty and may affect remainingwarranty coverage for affected parts.GM Accessories are designed to complement andfunction with other systems on the vehicle. Your GMdealer can accessorize the vehicle using genuine GMAccessories. When you go to your GM dealer and askfor GM Accessories, you will know that GM-trained andsupported service technicians will perform the workusing genuine GM Accessories.Also, see Adding Equipment to Your Airbag-EquippedVehicle on page 2‑71.6-4