Blower problems of the 2005 Chrysler Town & Country

While driving on the interstate in January 2009 the heater blower fan suddenly went to full blast and full heat. Ii was not able to turn it off or down. After exiting the interstate and parking the Mini van, I turned the engine off for a minute and after restarting everything was normal. Later that same morning the heater again went to full blast with no input from me. I took the vehicle into the dealer and after 30 minutes, the service manager said it was fixed for now but told me I needed a new temperature control module; he would have to order one at $750. 00, I replied that I'd think about it. During the next few weeks the problem occurred again and after turning the engine off everything seemed to work ok. Sometimes the problem would go away on its own. It was not until the weather began to warm that I discovered I have no a/c, although the freon level appeared to be ok. I called autozone to inquire about a replacement part and they informed me that Chrysler had not released the part for the aftermarket but they could order a used part for $209. 00. The replacement part would carry a 3 year warranty. I ordered the part which was delivered a few days later. It took less than 30 minutes to replace the unit and everything is now like new.