Blower control will not turn off high town & country 2002

My 2002 T&C van did the same thing. Here is how I fixed it:

Open and remove the catch that holds the glove box. Behind the glove box you'll see the air duct system. Directly in front of you notice the part with screws holding it in place on the duct and wires plugged in. This is a control for the heating and A/C system. Depending on your type of system controls, (manual, you adjust temperature or automatic, you set digital temperature) you can replace this unit. Unplug the unit, remove screws and remove control unit. Take part to NAPA Auto Parts for a replacement part. They had the manual part about $25.00. Mine has the automatic controls and I had to go to dealer for replacement, mine cost about $65.00. This is easy to do and fixed my "out of control heating and A/C system".