i just bought this Tahoe about a month ago and recently it has been doing strange things.. its fine during the day or anytime when my head lights aren't on. if my headlights are on i don't have any break lights my blinkers don't work and when i do have them on its like my hazard lights are on. also my cruise control won't work either. now during the day it runs perfect... any one have any ideas that can help me fix it or give me an idea of what the problem may be? thanks in advance!!!