Ok was on the way home from a friends house on the highway home a rock hit the windshield. Well I now noticed a small crack there . I do not have glass coverage on the truck it is a 2002 Lt trailblazer ext. So do you thin that I can have the windshield replaced somewhere else or so I have to go to the dealership? I hate to put money in GM'S pocket but with it being leased i just was wondering if I could change the windshield somewhere else? Also if I change the windshield does it affect the ON- Star? Just wondering if anyone knew the answers.