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Discussion Starter · #1 ·
I was having hard shifting issues with my allison trans in an 01 2500HD...I disconnected the TCM to look at the pins but after reconnecting it, the truck won't start or register gear placement on dash. Any ideas?
 

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Discussion Starter · #2 ·
Fixed

Must have popped the ECMB fuse when I plugged TCM back in...quick fuse change was all that was needed.
 
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