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 WarningLifting and Jacking the Vehicle
Note: The use of a LOW PROFILE LIFT ARMS SYSTEM may be required to
avoid unwanted contact with the vehicle's body and structure
depending on lifting equipment used. Refer to the manufacture's recommendation
for their applications of low profile lift arms system for
their lifting equipment.
...
Removal Procedure
Warning: Refer to Approved Equipment for Collision Repair Warning in the
Preface section.
Warning: Refer to Collision Sectioning 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 &nbs ...
SIR Identification Views
The SIR Identification Views shown below illustrate the approximate location
of all SIR components available for the vehicle. This will assist
in determining the appropriate SIR Disabling and Enabling for a given service
procedure, refer to SIR Disabling and Enabling.
Front End Sensor-- ...