4L60 to 4L80 swap Does it take sending off my tcm to have the segment swap completed or is that something that can be done thru HPtuners. Am I looking for the TCM OS or the EMC OS to match? Cant seem to find one that matches. Seems to be alot easier with the GMT 800 trucks. Any help would be appreciated.
2007 GMC Yukon
E38 ECM 12614088
T42 TCM 24235341