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 WarningLighting
Specifications
Headlights/Daytime Running Lights (DRL) Schematics
Interior Lights Schematics
...
Steering Linkage Outer Tie Rod Replacement
Preliminary Procedure
Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and
Installation.
Steering Linkage Tie Rod Nut
Caution: Refer to Fastener Caution in the Preface section.
Tighten
35 N·m (26 lb ft)
Steering Linkage Inner Tie Rod Nut
Tighten
60 N·m (44 ...
Reporting Safety Defects to the United States Government
If you believe that your vehicle has a defect which could cause a crash or could
cause injury or death, you should immediately inform the National Highway Traffic
Safety Administration (NHTSA) in addition to notifying General Motors.
If NHTSA receives similar complaints, it may open an investig ...