Hey guys, new to the group so "Hello from Texas"! I've got a 2008 Tiffin Allego Bay Open Road with a 6.7L Cummins and Allison transmission. Had a breakdown last weekend and the shop says it needs a new TCM. Labor is ridiculous, so I've authorized them to purchase the new TCM and program it to my transmission, but I'll be installing myself. From what I've seen online it should be a matter of unplugging two harness connectors and reinstalling with new TCM. Anybody done this and able to confirm before I get it back only to figure out it's not that simple?