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:

California Proposition 65 WarningFront Side Door Window Switch Replacement (Left Side)
Front Side Door Window Switch Replacement
Callout
Component Name
Preliminary Procedure
Remove the front side door window switch bezel. Refer to Front Side Door
Window Switch Bezel Replacement.
1
...
Ball Joint Inspection
Caution: Refer to Vehicle Lifting and Jacking Caution.
Raise the front of the vehicle to allow the front suspension to hang free.
Grasp the tire at the top and the bottom.
Move the top of the tire in an in-and-out motion.
Look for any horizontal movement of the knuckle relativ ...
Front Wheel Drive Shaft Seal Replacement - Left Side
Front Wheel Drive Shaft Seal Replacement - Left Side
Callout
Component Name
Preliminary Procedures
Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
Remove the left wheel drive shaft. Refer to
Fr ...