I HAVE A 2009 CHEVROLET IMPALA THAT I PURCHASED IN 2010. SEVERAL MONTHS LATER, THE CAR BEGAN TO READ CHECK ENGINE, SERVICE TRACTION CONTROL, REDUCED ENGINE POWER, THEN STALLS AND JERKS WHILE I'M DRIVING. IT HAPPENS INTERMITTENTLY. I TOOK IT TO AUTOZONE TO HAVE THEM CHECK THE COMPUTER CODE. THEY SAID IT WAS THE ACCELERATOR PEDAL POSITION SENSOR. THE CAR ONLY HAS ABOUT 50,000 MILES ON IT. I AM PLANNING O TAKING IT TO THE DEALERSHIP BECAUSE IT IS HAPPENING MORE OFTEN AND I AM AFRAID THAT I WILL HAVE AN ACCIDENT AS A RESULT OF THIS PROBLEM. *TR