Hi Dick, it was the 2000 model year with speed control switch. Here's a link to the first one I came across today.

http://www.msnbc.msn.com/id/6876176/

From what I read they'll handle the recall in two steps. First is to call the affected trucks in and shut off power to the switch, then when they have sufficient supplies of an improved switch they'll call the trucks back in to replace the units.