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 Seat Belt Guide Adjuster Replacement (with AHU)
Front Seat Belt Guide Adjuster Replacement
Callout
Component Name
Preliminary Procedures
Remove the center pillar upper trim panel. Refer to Center Pillar Upper
Trim Panel Replacement.
1
Driver ...
Exhaust Manifold Heat Shield Replacement (LUW)
Catalytic Converter Heat Shield Replacement
Callout
Component Name
Warning: Refer to Exhaust Service Warning.
Preliminary Procedures
Disconnect the negative battery cable. Refer to Battery Negative
Cable Disco ...
Clutch System Description and Operation
Clutch Spin Down Time
Inspect the clutch spin down time as follows:
Apply the parking brake and block the vehicle wheels.
Shift the manual transmission into NEUTRAL.
Start the engine. Run the engine at idle speed.
Engage the clutch.
Disengage the clutch. Wait 9 seconds.
...