Originally Posted by lstowell
The OP has something wrong.
Although I've noticed that even in ECO mode when wandering up and down [say like over the capitol reefs] it may stay in 6th or 7th longer before going to 8th, the no downshift smells like big troubles in the transmission or controller.
As for those temperatures, its been below zero for days and once the vehicle is warm, I've had no trouble with down shifts or getting into the higher gears on the freeways in Colorado.
Have a dim recollection it may inhibit higher gears until up to full operating temperature like the older 4-5 speeds did, as well as full throttle downshifts, but
once operating temps are reached, shouldn't be doing what it appears to be doing.
This was like after 40 miles. And it would go to "Normal" behavior if I reminded it, that it had 7th and 8th with the paddle shifters. For a short while.
I could step on it and it would shift normally down and back up to 8th shortly after forcing it up to 8th with the paddle and then disabling the paddle.
It's like this long stretch of no shifting with it real cold, made it numb.
I think a sensor is misreading due to low outside temp or a controller misbehaving.
I think Transmission was 156 like degrees. It stayed there for the entire 120 mile trip.
This morning with temps in low 20's it behaved normal.