My car has gone through maybe 4 opti's in the last 5 months. Today the car hesitated out of no where and it died and wouldnt turn over there after. The dealer said it was the pcm not sending a signal to the opti and the pcm needed to be replaced and reporgrammed. Could this actually be the problem, and also they want to charge me $250 for the pcm and $80 for labor.