I have swapped a 2009 LY6 into a 2005 Colorado and rebuilt the 05 4L60e and bolted it behind the LY6, my question is can I use a TCM from a 2009 Colorado to control the 2005 transmission? I put a standalone harness for the engine and got a harness to integrate the original Colorado ECM to the new engine. Everything in the truck seems to be working but the transmission only shifts from 1st to 2nd.