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 LightFront Floor Lower Console Side Finish Cover Replacement - Left Side (Terrain) Consoles Center Console
Front Floor Lower Console Side Finish Cover Replacement - Left SideCalloutComponent NamePreliminary ProcedureMove the left front seat to the full rearwardposition.1Push Pin Fastener2Front Floor Lower Console Side Finish Cover - LeftProcedureGrasp the side finish cover and pull outward releasing ther ...