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 WarningInstrument Panel Illumination Control
This feature controls the brightness of the instrument panel controls and infotainment
display screen. The thumbwheel is to the left of the steering column on the instrument
panel.
(Instrument Panel Brightness): Move
the thumbwheel up or down and hold, to brighten or dim the instrument pane ...
Front Side Door Lock Cylinder Replacement
Front Side Door Lock Cylinder Replacement
Callout
Component Name
1
Front Side Door Lock Cylinder Screw Access Plug
Tip: Use the appropriate tool, remove the plug.
2
Front Side Doo ...
Front Bumper Lower Impact Bar Replacement
Front Bumper Lower Impact Bar Replacement
Callout
Component Name
Preliminary Procedure
Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement.
1
Front Bumper Lower Impact Bar Br ...