Towed my trailer for the 1st time today, only about 25 miles across town. I noticed that when using tow/haul mode the tranny will still shift into 5th. That means trying to tow my trailer at 60mph at only 1800rpms. Even my hemi isn't strong enough to tow in 5th very well. When I first push tow/haul it will shift into 4th but will shift back into 5th after a few miles. Once it does, shutting off tow/haul does nothing since its already in 5th.

Anyone else have this problem? I have the latest firmware updates. Also, it does not downshift when descending a downhill grade. Stays in 5th providing very little engine braking.