Hey Guys n Gals. I'm replacing a tranny in a 05 G6 3.5 V-6 with a used one. The o.e. tranny has a tag with ESJ on it. Salvage yard has one with a tag EXJ on it. I've looked and found they are the same gear ratio, but is there possibly some difference in the electronics that would bite me in the end? Has anyone ever confronted this issue?