MY DAUGHTER TRAVELING AT APPROXIMATELY 55 MPH, SAW CAR IN FRONT OF HER STOPPED AT A STOP LIGHT. SHE ATTEMPTED TO SLAM ON THE BRAKES, IT FELT AS IF SHE WAS NOT STOPPING AT ALL. SHE HIT THE STOPPED CAR, PUSHED BOTH OF OUR CARS THROUGH THE INTERSECTION TO THE OTHER SIDE. HER AIRBAG DID NOT DEPLOY, ONSTAR DID NOT CONTACT HER. THE REASON I BOUGHT THIS SPECIFIC CAR WAS FOR THE ONSTAR IN CASE OF A COLLISION OR EMERGENCY. WHEN I CONTACTED ONSTAR LATER, THEY REPORTED THEY DID NOT RECEIVE NOTIFICATION THAT A COLLISION HAD OCCURRED. I CONTACTED GM TO HAVE BRAKE, AIRBAG, AND ONSTAR FAILURE INVESTIGATED. RECEIVED REPORT FROM GM INVESTIGATOR STATING NO FAILURE IN AIRBAG SYSTEM, THAT THE CRASH WAS NOT SIGNIFICANT ENOUGH TO CAUSE AIRBAG DEPLOYMENT AND ONSTAR NOTIFICATION. SHE WAS TRAVELING 45 MPH UPON IMPACT (PER CDR). THE CAR WAS TOTALED - OVER $13,000 DAMAGE. IF A CRASH AT 45 MPH, REAR-ENDING, CAR TOTALED DOES NOT DEPLOY AIRBAGS IT SEEMS AS THOUGH SOMETHING IS WRONG. *TR