http://www.allisontransmission.com/p...delGrouping=at
Ok...that link doesn't provide much information. The operators manual seems to be the same for all versions. From reading various posts, the best I've come up with is that the AT545N has a neutral position on the shifter so that the parking gear can be integrated into the gear selector without actually having a parking pawl inside the transmission. I'm curious if anyone else has some information on the differences.
Linear Mode
