4L80E/4L85E
I just got done rebuilding a 2007 ls2 with 4l80e harness and didn't turn on for some weird reason it will with the previous 4l70e tcm but will not shift at all.
So I ordered another tcm and harness and same thing cranks but doesn't start I need to start with the 4l70e tcm and then swap it to the...