Allison Transmission Questions Hi Flyinlow, The dealer may be right that there is no problem. An Allison transmissions whole shift pattern is decided by the drivers position on the throttle. A very light throttle actually is worse than full throttle. What happens is the shifts come at a lower rpm and when it makes the shift, you are not in the correct torque curve and the transmission wants to shift back and forth trying to find the right gear for the rpm and torque. Just try pushing a little farther on the throttle and see if this resolves your shift cycling. If it does not, please let me know, then I need to dig deeper. Thank you and have a great day!