I own a 2004 Saturn L300 sedan. On October 25, 2007, I was driving my car on the highway in the passing lane going about 65 to 70 mph and the car stalls and the gas pedal shows no response. The car engine warning light comes on along with the service engine light and loss of power light on the dashboard. I had to crossover a lane and pull the car over. While putting the car in park the car shakes. I turn the ignition off and start the car again and I am able to go but the transmission shifts very hard. There were no precursor signs that the car was having problems. The car was towed to the Saturn dealership, and they expressed that code P0606 showed up and that they had to replace the engine control module (ECM/PCM) because it was faulty. On January 31, 2008, I was driving on the freeway and the car stalled again while I was in the passing lane. I took the car to an auto parts store so that they could get a quick scan on the computer. Again the code P0606 shows up. I had the gentleman print me out a copy of the code, for my own record. The receipt stated that the probable cause for the problem is a failed ECM. So I return to the Saturn dealership to have them check up on the problem. Later that day, they told me that they could not find the problem and then when I showed them that I had the codes read just before I came in, they had told me that "yes, that code came up, but that was an old code from before, so we just erased it". even though I had proof that it was a new code, they ignored my concerns. On February 12, 2008, just 12 days after being in the shop, it happened again. I was driving down the highway and the car stalls while I am in traffic going about 65 mph. I again go to the auto store to obtain the receipts of what is wrong with the car. The same code comes up again P0606 (ECM/PCM fault). I take it to the dealership and the decide to replace to mass air sensor because that's what they think is wrong with it.

- Oxford, PA, USA