So I’m working on a mess of a 08 endeavor. Current problem is as follows.
replaced the 08 trans with a 05 trans.(all specs match)
trans from 05- no damage, no torture, no issues. Rank grade a
but it in the 08 endeavor. Everything went back into place right.
took it for a test ride.
7 blocks in. Transmission locked up.

now I’ve seen in my books a few times a reset of values is required and I’ve seen it say I need to use my scan tool to reset the ecu.

any idea before I go back to working on it tomorrow would be great.