NASHVILLE, Tenn. – The Peterbilt plant in Madison is shutting down for good on Tuesday. The truck manufacturer is consolidating production with its other plant in north Texas, leaving about 390 Tennessee workers out of a job. The plan temporary shut down in February, when Plant manager Larry Vessels told News 2 the plant would not resume production until the economy improves. Hourly workers at the plant had been locked out since June 2008 because of a labor dispute.