transmission problem

  1. Dirtymaxrandy

    Help!!! 06 lly/lbz Allison 1000 6 speed clunking

    hello, I have a 2006 Chevy Duramax crew cab dually 4x4 Truck intermittently has slight difficulty coming out and going in to gears P,R,N,D, and coming in and out of park With a loud clunk harsh feeling as if it is loaded or parked on a hill once in any gear runs perfect, doesn’t skip a beat and...