I am with state farm insurance and I pay about $1 a month for no deductable glass insurance. If offerred, I would add insurance for glass and pay nothing if it breaks. Since this has been shaved for weight, we would all be insane not to follow up on this. I will also be shocked if anyone but GM goes through the weight savings based on the numbers of possible sales. Try pricing this at gmpartsdirect.com and let us know if you want to try for a GM quote.