NHTSA Complaint #10604633 — 2009 CHEVROLET IMPALA

THERE IS A CONSTANT KNOCKING IN THE DASHBOARD, WHEN I ATTEMPT TO TURN ON THE AIR CONDITION OR THE HEATING SYSTEM IN THE VEHICLE. THIS KNOCKING CAUSES THE HEAT TO BE PASSED THREW THE VEHICLE, IN THE SUMMER TIME I WOULD HAVE TO TURN THE CAR OFF AND ON, THEN KEEP ADJUSTING THE AIR CONTROL UNTIL THE AIR BEGAN TO BLOW. MAJORITY OF THE TIME THE AIR DOES NOT COME ON, THERE IS JUST CONSTANT HEAT COMING FOR THE DASHBOARD AND THE FLOOR BOARD. I BEGIN TO NOTICE THAT THIS KNOCKING WOULD OCCUR WHILE I WAS NOT IN THE CAR, WHILE HITTING THE REMOTE FOR ENTRY INTO CAR AND WHILE THE CAR IS BEING DRIVEN. I HAD A NEIGHBOR WHOSE VEHICLE WAS DOING THE SAME THING. AS TIME WENT ON I COULD BE WALKING THREW A PARKING AND HEAR THAT SAME SOUNDS IN OTHER IMPALA MODELS. *TR