Navigational (global Positioning System) Gps problems of the 2006 Chrysler 300

Takata air bag was replaced but dealer was unable or unwilling to tell which air bag was used as the replacement device. Since the replacement, the gps system does not work, when I turn on the radio I get a bing bing bing sound. Dealer says it is my job to replace radio and gps system for almost $2,000 - labor not included. New radio and gps not available for this car at this time. Local vendor suggested the air bag was not installed properly or the wrong make/model was used to get the job done and get rid of me. I had also read on your list of recalls for this model there was a radio that exploded. I need the radio and particularly the gps to work and the car will have reduced resale value without either of those functioning properly. Dealer ordered a new gps disc and tried to load it to make the system function once again, but the gps system would not load the new disc.