I was kinda thinking that, but wasn't quite sure. I think I may just do a rebuild on the motor thats in there with a few mods and just swap out the tranny and transfer case.
Have a 2011 Chevy Silverado, that its driveline has seen its day. I recently aquired a 2017 driveline (motor, tranny, and transfer case) everything complete with harnesses and all, but missing ECM. What do I need to do as far harness ECM compatibility with my truck?