my 03 dirty will lock into 3rd gear and show shift range inhibited on cluster during heavy throttle use, loaded or empty. have to pull over, shut down, and restart engine to reset. often requires multiple shutdowns and restarts
Mike is telling you to use a scanner to read what codes come up. What shows up on the dic isn't enough information. When you have the codes he can help you figure out the issuefuel filter is fine. didn't use code reader the message shows up on the gauge cluster. if anyone can figure this out i would like to hear it. both the ecm and tcm were replaced and a new transmission was installed by allison technicians.
Have the same issue. Code I got is P0735 5th gear ratio incorrect.
Any help would be helpful.