My local Chevrolet dealer charged me $200 for a “software upgrade” so that the passenger airbag sensor light would sense that there was indeed a passenger. This is on a 2007 Impala with only 8000 miles but over the 3year warranty by six months. I think this is bogus, but how do I know or who do I complain to?
You can try the NTSB.
http://www.ntsb.gov/
The time to argue about this was BEFORE you gave them the money…
That’s not a lot of help