l have checked everything possible, and have no clue what it can be. Does anyone have any suggestions? (l literally checked everything you can possibly think of)

It was probably wrecked.take it to the dealers garage and have them reset it. and if that do not work then there is no airbag in place of it

Here is a site that will explain everything u need to know about airbag lights & resetting the system.
http://airbagsolutions.com/

On most vehicles, the airbag light should come on for 6 seconds, & then go off if the system is working properly. If there is a fault or a problem in the system, the light will remain illuminated, or flash continuously. If the airbag light does not work properly, some vehicles have an audible tone that sounds indicating a problem with the airbag light system. When the light is on (or the tone is sounding), the airbag will NOT deploy, even in an accident.
The flashing light on ur car is telling the answer u need. On some vehicles, the light is flashing a two digit code. Once u know the code, u can most likely repair it yourself. There r fairly easy procedures that most people r capable of repairing.
http://airbagsolutions.com/light.aspx

This website gives u the procedure for diagnosing & resetting airbag lights. See if ur car is listed here.
http://airbagsolutions.com/vehicles_list.aspx

Some vehicle manufacturers accommodate systems without a scanner (like Toyota, Lexus, Nissan, Infinity, Honda, Acura, Ford, Lincoln, Mazda & Mercury) & some require a scan tool.

Check out these websites also for more info on airbag systems & the light.
http://blog.airbagsolutions.com/archive/2007/11/18/why-is-my-airbag-light-on.what-should-i-do.aspx
http://airbagsolutions.com/resources.aspx
http://blog.airbagsolutions.com/

Also, u may want to check out this site for information on researching ur own vehicle for factory recalls!!!
http://airbagsolutions.com/nhtsa.aspx

These cars are common for the drivers seat wire to have a poor connection from the seat moving back and forth. l would try a pin fit on the connector under the seats and see if the light turns off.