Last week, my 2000 Chevy Silverado Z-71 began shifting itself into tow/haul mode. It would come and go, but the button was never the reason why it would turn off or on. The on and off routine didn't last long however, for the last several days, it has been stuck in the ON position. The dash light is lit, and the transmission is engaged in tow/haul mode. What can I do to get it back off? I'm not sure if there is a risk of damage to the tranny or not at this point, but I doubt if it's doing the truck any favors. If nothing else, I imagine my gas milage is suffering. Any ideas you guys have are greatly appreciated. Thanks in advance!