OTHER VEHICLE FAILED TO YIELD RIGHT OF WAY. BLAZER BROAD SIDED OTHER VEHICLE AT ABOUT 50 MPH. AFTER IMPACT BLAZER ROLLED LANDED UPSIDE DOWN. SEAT BELTS HELD. BUT AIRBAG DID NOT DEPLOY. WE WERE TO BY TOW TRUCK DRIVER THAT IT WASN'T A DIRECT HIT. OFF TO THE RIGHT. THAT IT WOULD HAVE TO BEE A DIRECT HIT FOR THE AIRBAG TO DEPLOY. I WAS UNABLE TO GET INFORMATION FROM GM. SEEMS LIKE WITH THAT MUCH IMPACT THE AIRBAG WOULD DEPLOY.