Not sure what tow/haul mode is but haven't seen it on any buttons/switches in the driving seat area or on the PRNDL. Still haven't double checked to see if there is something between DL yet, it's been too hot out to do anything but sit inside with the swamp cooler running full blast. ;)
I've never heard of stab braking, so please do explain it. If it turns out to be something I do know under another name, my feelings won't be hurt. I'd rather read 10 explanations of stuff I already know than miss the one that I don't.