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 WarningRear Door Lock Cylinder Replacement
Rear Door Lock Cylinder Replacement
Callout
Component Name
1
Rear Side Door Lock Cylinder Opening Cover Screw Access Plug
Tip: Use a flat-bladed tool to remove the cover.
2
Rear ...
Replacing LATCH System Parts After a Crash
Warning: A crash can damage the LATCH system in the vehicle. A damaged
LATCH system may not properly secure the child restraint, resulting in serious
injury or even death in a crash. To help make sure the LATCH system is working
properly after a crash, see your dealer to have the system ...
Rear Seat Center Shoulder Belt Replacement (Hatchback)
Rear Seat Center Shoulder Belt Replacement
Callout
Component Name
Preliminary Procedures
Remove the rear seat cushion. Refer to Rear Seat Cushion Removal
and Installation.
Remove the rear seat back cushion. Refer to Rear ...