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 WarningBody Rear Seat Back Trim Panel Replacement (with AMA/AM7)
Body Rear Seat Back Trim Panel Replacement
Callout
Component Name
Preliminary Procedure
Remove the body side trim panel. Refer to Body Side Trim Panel Replacement.
1
Body Rear Seat Back Trim Pane ...
Tire Rotation
In order to equalize wear, rotate the tires at the specified intervals. Also,
rotate the tire and wheel assembly whenever you notice uneven tire wear.
Radial tires tend to wear faster in the shoulder area, particularly in front
positions, due to design. Radial tires in non-drive locations may ...
Low and Reverse Clutch Assembly and Low and Reverse Clutch Plate Installation
Low and Reverse Clutch Assembly and Low and Reverse Clutch Plate Installation
Callout
Component Name
1
Low and Reverse Clutch Assembly (OWC)
Note:
The Low and Reverse Clutch Assembly should rotat ...