[nasabound1]

Hey folks..

I have a 2000 H1. I am in the process of moving from Maryland to Florida and have now made 2 trips towing trailers. Both trips the transmission would work in 4th for a while but as soon as any upgrade is encountered it downshifts to 3rd gear and doesn't return to 4th unless I pull over and turn the truck off. I talked to Am General on the trip and the engineer I spoke with said this is normal. He suggested an increase in tire pressure to 40 PSI. A call to the dealer disclosed that these transmissions, when used on other vehicles, have a tow/haul switch that can be engaged to overcome this and force the transmission to stay in fourth. Has anyone had a similar problem towing trailers of any size for a moderate distance? My round trip is about 1700 miles and it's miserable driving at 63 mph and having almost 3 gran on the tach. Suggestions?

Thanks,

Dave