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 WarningInstallation Procedure
Create 8 24 mm (5/16 x 15/16 in) slots for MIG-brazing along the edges
of the underbody rear side rail reinforcement as noted from
the original panel.
Clean and prepare the attaching surfaces for
brazing.
Position the underbody rear side rail reinforcement on the ve ...
What Will You See after an Airbag Inflates?
After the frontal airbags and seat-mounted side impact airbags inflate, they
quickly deflate, so quickly that some people may not even realize an airbag inflated.
Roof-rail airbags may still be at least partially inflated for some time after
they inflate. Some components of the airbag module ma ...
Steering Linkage Inner Tie Rod Replacement (Hydraulic Power Steering)
Special Tools
CH-6247 Removal and Installation Tool for the Steering Linkage Inner Tie Rod
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Raise and support the vehicle. Refer to Lifting and Jacking the
Vehicle.
Remove the tire and wheel assembly. Refer to ...