both rear passenger window sensors malfunction, driver also

I find it embarrassing for a car manufacturer to have a vehicle that they state have great accolades over and don't honor their statement in their warranty. In fact, buyers should beware of the typical fair wear and tear items that are on their list. My kids windows have malfunctioned within a 6 month period right after the car cross the 30,000 mile period. I have three doors of 4 which have bad sensors. I find it incredible coincidental for three doors to go out around the same time. I would have to synchronize rolling my windows up and down at the same time or they are made and designed to give Chevy work in the future. I paid for my driver side master sensor to be replaced but find it awkward that this is not a safety issue. Any door or window malfunction should be in the same avenue. I hope that Chevrolet is looking into this item and validate if there are a systematic issue for window malfunction or sensor damaged causing windows to operated going up and down properly.