VEHICLE WAS TRAVELING APROX 15-20MPH AND REAR ENDED A LARGE SUV (SURBURBAN). SUBSTANTIAL DAMAGE WAS DONE TO THE FRONT END OF THE ALERO WITH MINIMAL DAMAGE TO THE SUV. ESTIMATE OF DAMAGE IS $5200 INDICATING MAJOR DAMAGE WAS DONE TO VEHICLE. AIR BAG SYSTEM DID NOT DEPLOY. FORTUNATELY ONLY MINOR INJURY (LARGE BUMP ON FOREHEAD FROM CONTACT WITH ROOF OF VEHICLE, SEAT BELT BURNS AND BRUISES) WAS INCURRED BY DRIVER OF THE ALERO. MY QUESTION IS WHY THE AIR BAGS DID NOT DEPLOY TO LESSEN THIS IMPACT. THERE HAS BEEN OTHER ELECTRICAL PROBLEMS WITH THIS VEHICLE. WONDERING IF THERE IS A DEFECT OR DAMAGE TO AIR BAG SYSTEM FROM EARLIER SERVICES? *AK