There is a driver seat belt reminder light on the instrument cluster.

When the vehicle is started, this light flashes and a chime may come on to remind the driver to fasten their seat belt. Then the light stays on solid until the belt is buckled.
This cycle may continue several times if the driver remains or becomes unbuckled while the vehicle is moving.
If the driver seat belt is buckled, neither the light nor the chime comes on.
Passenger Seat Belt Reminder Light#PIC5901: Bluetooth Connection Issues Between Samsung Galaxy S III and Vehicle Radio - (Aug 7, 2013) Entertainment Audio
Subject:Bluetooth Connection Issues Between Samsung Galaxy S III and Vehicle RadioModels: 2013 Buick LaCrosse, Regal2013 -14 Buick Encore, Verano2013 -14 Chevrolet Camaro, Cruze, Equinox, Malibu, Volt2013 -14 GMC TerrainEquipped with an IntelliLink/MyLink Radio (RPO UFU w/UP9 or UHQ)The following d ...