Hello. I have a 1999 suburban. All of my brake lights do not work, including the one over rear doors. Please let me know if this is common, and what may be the problem. Someone told me that if one light goes out, they all do, is that the case? I can't believe all my bulbs burnt out at around the same time. I did have to replace both rear bulbs last year (they were burnt out). But never all three. Thanks for any help.