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  1. Allison OEM
    I’ve dug through the forums I can’t find anyone that is or has had the same symptoms. My truck will pull a trans code of u0100 lost communication with ecm/pcm “a” when I start it up. Then as I drive it will throw more codes. I have checked wires checked connectors. I have read it could be a nsbu...
  2. Allison OEM
    Does anyone have a fix for these codes, P0700,U0100.? Did a search, but other than loose /chafed wires, not much other info. My `06, completely stock LBZ, is not shifting normal and the check engine light is on. Autozone came up with the 2 codes. Looking on the bright side, I have over 400,000...
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