Passenger side front window developed a stress crack. the crack begins unders the cover for the rearview mirror and extends upwards about 1/3 of the way down window and terminates at the top edge of the glass. the crack happened while driving and there were no strikes to the side window. appears to be a faulty piece of glass. i have since observed another buick enclave with the passenger side front window cracked in the exact same location with the same crack pattern