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:

Vehicle Care
California Proposition 65 WarningRear Compartment Lid Emblem/Nameplate Replacement (LT or LTZ)
Rear Compartment Lid Emblem Assembly
Caution: Refer to Exterior Trim Emblem Removal Caution in the
Preface section.
Procedure
The part and surface should be 21°C (70°F) prior to installation. The
vehicle should remain 21°C (70°F) for
one hour after assembly to allow adhesive to deve ...
Interior Lighting
Dome Lamps
The dome lamp controls are located in the headliner.
: Press to turn the lamps off, even
when a door is open.
: Press to turn the lamps on automatically
when a door is opened.
: Press to turn on the dome lamps.
Reading Lamps
The reading lamps are located in the overhead con ...
Battery Negative Cable Disconnection and Reconnection
Removal Procedure
Turn on the radio and record all of the customer radio station presets.
Ensure that all lamps and accessories are turned off.
Turn the ignition OFF and remove the ignition key.
Warning: Refer to Battery Disconnect Warning in the Preface section.
Loosen the negati ...