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 WarningStabilizer Shaft Link Replacement
Preliminary Procedure
Raise and support the vehicle. Refer to Lifting and Jacking
the Vehicle.
Remove the front tire and wheel assemblies. Refer to Tire and Wheel
Removal and Installation.
Stabilizer Shaft Link Nut (Qty: 2)
Caution: Refer to Fastener Caution in the Pr ...
Service Publications Ordering Information
Service Manuals
Service Manuals have the diagnosis and repair information on the engines, transmission,
axle, suspension, brakes, electrical, steering, body, etc.
Service Bulletins
Service Bulletins give additional technical service information needed to knowledgeably
service General Motors c ...
Wheel Alignment Measurement
Steering and vibration complaints are not always the result of improper
alignment. One possible cause is wheel and tire imbalance.
Another possibility is tire lead due to worn or improperly manufactured tires.
Lead/pull is defined as follows: At a constant highway speed
on a typical straight ...