Thank you for that update. In fact, the original post didn't mention anything about having read the diagnostic fault codes. That could have saved them a lot of time and money. The description of the symptoms suggests it was going into "limp mode" where it goes to and stays in second gear.
The Transmission Computer also learns and stores four values called the "clutch volume index", (CVI) referring to the volume of fluid it takes to apply each of the four clutch packs. An experienced transmission specialist can tell by those numbers how close the transmission is to needing to be rebuilt. Without that, there is no way to tell how much life is left in it because based on those values, the computer constantly modifies its shift "overlap" to maintain a "like-new" shift feel. You don't get the year or two of warning from sloppy shifts like we did with the older transmissions.
Sunday, May 28th, 2017 AT 8:07 PM