EXHAUST FUMES ENTERING AIR VENTS. TAKEN IN TO DEALER SEVERAL TIMES AND THEY CANNOT FIX THE PROBLEM. MY DAUGHTER HAS BEEN SICK AND WE KEEP EXPLAINING TO THE THAT FUMES HAVE CAUSED HER TO HAVE PNEUMONIA, SINUS ISSUES, DRY EYES, SORE THROAT, MIGRAINE HEADACHES, SLEEPY DRIVING AND HOURS AFTER DRIVING, CONFUSION, ANXIETY, NAUSEA. THE DEALERS MECHANIC SOLUTION IS NOT TO USE AC OR HEAT AND KEEP WINDOWS OPEN. MY HUSBAND DROVE IT 20 MINUTES IN TRAFFIC AND GOT SICK WHEN HE REACH THE DEALER FOR 3RD REPAIR REQUEST IN 2 MONTHS. ENGINEER FROM GM IS LOOKING AT CAR MAY 2018. MY DAUGHTERS HEALTH IS CONTINUING TO IMPROVE NOT DRIVING THE CRUZE. NOT ONE PERSON SHOULD BE SICK OR DIE FROM A CAR THAT HAS A DEFECT THAT CANT BE RESOLVED.