[Drea5000]

Battery voltage is key for the allison to operate properly. If you are having battery problems that is going to cause issues with the allison computer.

Thanks so much. After digging through the Internet, that is what I have come up with and for certain my voltage is not being maintained. I am going to take off my alternator this week. I just called a local rebuild shop to have it rebuilt because it does not go above 12 seven and I’ve measured it at the batteries at the alternator and looking at the voltage meter on the front. It definitely is way lower than it should be, and I believe that may be the problem with the transmission not engaging as I found in the manual that if it’s under, it won’t engage

It did start off at around 12.8 but after idling up and getting the air pressure up, I’m pretty sure it was lower when I tried to engage the transmission