ON DATE STATED, OUR 2004 CHEVY TAHOE VIN [XXX], LEFT THE ROADWAY, BECAME AIR BORNE, LANDED ON ITS NOSE, DEPLOYED THE AIR BAGS, AND ENDED UP UPSIDE DOWN. ACCORDING TO ONSTAR, THEY SHOULD HAVE BEEN NOTIFIED WHEN THE AIR BAGS DEPLOYED, BUT THE SYSTEM FAILED AND DID NOT SEND NOTIFICATION. THERE WERE NO LIFE THREATENING INJURIES, BUT HAD THIS BEEN AT NIGHT, AND THE ACCIDENT NOT WITNESSED BY OTHERS WHO CAME TO OUR AID. THE OUTCOME COULD HAVE BEEN ENTIRELY DIFFERENT. IT IS OUR DESIRE THAT THIS SITUATION BE ELEVATED TO THE PROPER LEVEL WITHIN GM, ONSTAR, AND SPECIFICALLY CHEVROLET, SO THAT THE PROPER RESEARCH CAN BE DONE WHERE THE SYSTEM WILL NOT FAIL IN SIMILAR CIRCUMSTANCES IN THE FUTURE. THE SYSTEM IS DESIGNED TO SAVE LIVES, BUT IF IT DOES NOT WORK, IS USELESS AND MUCH ADVERTISING TO THE CONTRARY IS VERY MISLEADING. THANK YOU FOR YOUR ATTENTION TO THIS. [XXX] GB. *NM