Originally Posted by SnoFire
-22 this morning before the windchill factored in (-45 or so with it). Mine also holds 7th gear on the highway but once it warms up it is fine. Gears 1-2 have always been a little rough so I'm not concerned about it (Jeep is going in on Friday to get the updates and oil changed).
Mine was staying in 6th and 7th when it was 0 F out after an hour of highway driving.
If I recall correctly the Transmission was to only 150 or so.
I wonder sometimes if the Towing Transmission Cooler keeps my transmission too cool when it's frigid out.
Since the new Rev C update I did try a short highway trip and transmission I think was only 140 and it shifted into 7th and 8th fine. But that was not a full test. I'd have to make the same trip at the same temp to be 100% sure it's "fixed".
If you are having Cold Shift problems get the Rev C or greater update on the V6 Transmission. It specifically states improved cold shifting.