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 WarningDriver or Passenger Seat Side Inflatable Restraint Module Replacement
Warning: Refer to SIR Inflator Module Handling and Storage Warning
in the Preface section.
Warning: Following the deployment of a side impact air bag, inspect the
following parts for damage. Replace these parts if
necessary:
The seat cushion frame
The seat recliner, if equipped
T ...
Front Wheel Drive Shaft Replacement - Right Side
Special Tools
CH-313 Slide Hammer
CH-6003 Axle Shaft Remover
CH-49376 Holding Wrench
CH-49400 Hub Spindle Remover
DT-6332 Seal Protector
EN-956-1 Extension
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Warning: To prevent personal injury and/or component ...
Installation Procedure
Cut the front compartment front rail in corresponding locations to fit
the remaining original panel. The sectioning joint should be
trimmed to allow a gap of one-and-one-half-times the metal thickness at the
sectioning joint.
Create a 50 mm (2 in) backing plate from the unused porti ...