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 WarningRemoval Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the
Preface section.
Warning: Refer to Glass and Sheet Metal Handling Warning in the Preface section.
Disable the SIR System. Refer to SIR Disabling and Enabling.
Disconnect the negative battery cable. Refer to Bat ...
Radio Reception
Frequency interference and static can occur during normal radio reception if
items such as cell phone chargers, vehicle convenience accessories, and external
electronic devices are plugged into the accessory power outlet. If there is interference
or static, unplug the item from the accessory p ...
Intermediate Steering Shaft Replacement
Removal Procedure
Turn the steering wheel to the straight forward position and support it
from movement
Remove the 2 intermediate steering shaft bolts (1).
Remove the intermediate steering shaft (1).
Installation Procedure
Install the intermediate steering shaft ...