Possible Allison 3000 overfill - electronic sensor is no good
I had my Allison 3000 serviced (drain, change filters, fill) at an Allison dealer last year. I was experiencing some issues with hard shifts, which they diagnosed as a bad transmission speed sensor. I’ve since replaced both transmission speed sensors, and the shifts have improved, but I still occasionally get weird behavior. The electronic transmission fill sensor doesn’t work (shifter shows code 95), so I can’t use that method. The dip stick shows way over full when the transmission is stone cold or hot, so I’m very confused. I’ve read on the iRV2 forums that the dipstick is not a reliable measurement method and I need to use the electronic method, but that’s not an option.
Should I try draining a couple quarts? Is there anything else I should do or try here?
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