WHEN TRAVELING ON SNOW PAVEMENT SURFACE AND UPON DEPRESSING BRAKE PEDAL, REAR BRAKES LOCKED UP, CAUSING VEHICLE TO GO INTO A SKID, RESULTING IN VEHICLE ROLLING DOWN INTO A DITCH AND HITTING A TREE. UPON IMPACT, NEITHER DRIVER'S SIDE NOR PASSENGER'S SIDE AIR BAG DEPLOYED ALSO THERE WAS AN EXCESSIVE AMOUNT OF FRONT END DAMAGE TO THE VEHICLE. CONSUMER HAS CONTACTED MANUFACTURER. PLEASE PROVIDE ANY FURTHER DETAILS. *AK