The issue with the airbag light in your Aveo could stem from a faulty seat occupancy sensor or a loose connection. The sensor determines if there's a passenger in the seat and triggers the airbag accordingly. If the light is inconsistent, it may indicate a wiring problem or sensor malfunction. Visit an independent mechanic for a thorough inspection. Ensure the sensor and its connections are secure, and consider checking the seatbelt buckle sensor as well. Ignoring the issue isn't advisable, as it pertains to critical safety systems. Addressing it promptly will help ensure the airbag functions as intended.