I have a ? HP Tuners did a segment swap on my pcm for a 4l60e to a 4L80e, but i am having an issue, my T/C will not lockup, but if i use a tech 2 i can manually lock it up. So that tells me that the wireing and solenoids in
trane are working. Just wanted to ask if there could be something wrong with segment that was swap for me. Can anybody HELP ME, THX Arthur

 

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