For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningSteering Wheel Inflatable Restraint Module Coil Replacement
Preliminary Procedure
Remove the steering column upper trim cover. Refer to Steering Column
Upper Trim Cover Replacement.
Remove the steering column lower trim cover. Refer to Steering Column
Lower Trim Cover Replacement.
Remove the steering wheel. Refer to Steering Wheel Rep ...
Restraint System
Note: If the vehicle has been in a collision, refer to Repairs and
Inspections Required After a Collision for additional information.
Vehicle has front and rear seat belts that are the primary means of occupant
restraint. Seat belts help to keep the occupants inside the
passenger compartment a ...
Instrument Panel
Instrument Panel Overview
1. Exterior Lamp Controls
Front Fog Lamps
Instrument Panel Illumination Control
2. Air Vents
3. Headlamp High/Low-Beam Changer
Turn Signal Lever.
Driver Information Center (DIC) Buttons.
4. Instrument Cluster
5. Driver Information Center (DIC)
6. Steering Wheel ...