In my case the chip was so tiny that it was only visible via a fingernail feeling it. However, that is all Chevy needs to disavow any warranty claim. I have one a lot of cars that have gotten small chips from flying stones and never had them crack like this. I think it is a flaw in the glass manufacturer/supplier. Strangely, Chevy can't get windshields from the supplier and none are available anywhere in the country. I guess they can't make any more cars since they can't buy windshields. Maybe they are seeking a different supplier because this should not be happening. It is unfair to stick us with the insurance co-pay and to claim no responsibility for a faulty product that cannot withstand a small stone hit, something that is to be expected in today's driving world. I may have to make a test case out of this by taking them to small claims court (good for up to $10K in CA) to see if that motivates them to resolve this issue.