side curtain airbags deployed driving 70 mph on I94 outside of Monticello, MN after drifting onto the rumble strip. Upon turning back there was a loud bang from the side airbags deploying. The drivers side came down and hit my daughter in the side of the head, the passenger side didn't come down all the way missing my 86 year old Mom as she is 5 ft tall. My daugther by some miracle didn't panic and veer into other traffic lanes with other vehicles driving 70 mph. GM is denying a problem and insinuating that something other than defect caused the airbags to deploy, even though there is nothing but rumble strips on the section of road. They are blaming some minor scraps on the side of the vehicle that were existing on a 2011 Traverse.