THE OTHER DAY I WAS SITTING IN TRAFFIC FOR ALMOST 30 MIN STOPPED WITH THE ENGINE RUNNING (LOTS OF CHRISTMAS TRAFFIC ON THE 5 SOUTH FREEWAY), I PUT THE TRUCK IN PARK BECAUSE I NOTICE AN ACCIDENT. I HAD MY WINDOWS UP AND MY CABIN AIR ON. THEN A FEW MIN LATER I STARTED FEELING DIZZY ALMOST FAINTING. THE CAR NEXT TO ME SAW THAT I WAS STRUGGLING, CAME TO MY WINDOW AND ASKED ME IF I WAS OK. I ROLLED DOWN MY WINDOW AND HE NOTICED THE SMELL OF EXHAUST INSIDE MY TRUCK. AFTER MY HEADACHE WENT AWAY. I WENT TO THE DEALERSHIP AND THEY TOLD ME BOTH OF MY EXHAUST MANIFOLDS WERE CRACKED AND THAT'S HOW THE EXHAUST WAS ENTERING NEAR THE FRONT CABIN. *TR