Hi! I drive a Dodge Ram 1500 2002 (New body style). Recently a ringing bell noise seems to come on for no apprent reason. The ringing sound is exactly when either your gas light comes on or other engine problems. The engine light is not on, and no other warning lights go on when the ringing sound happens. I'm not sure whats causing it to ring. Any issues and things I should look at? I had the trucked serviced 3 months ago for fluid change, inspection...etc. Its been happening alot lately. like ever 20 seconds the sound would come on. This has never happened before and I know its not the seatbelt warning. I dont want to take it in for a check up if I know its something minor and I can fix it. Please let me know if you guys have any idea.

Thanks.