This is a 2010 3500... 6. 7 . . it now has a BD extreme tow trans in it. . it lasted about 400 miles. . rolled up to a stop sign after coming off the highway and it will not move. . tried manual no good... fluid looks ok... BD said drop the pan and call them... will try to sqeeze this into my no time life. . at this time I am not real happy with this so called bullet proof trans. . I'm sure BD will make good on this but damn I'm upset. . I live in ohio and the trucks in florida right now. . I will be returning this weekend . . any thoughts or ideas would be appreicated... will keep you all informed. . thanks for now. .