Tow Haul.......When?
2003 GMC 2500HD pulling a roughly 11,000 LB 5th. Would you leave it in Tow/Haul on flat/level highways? Or do you put it in t/h and leave it?
Forum Discussion
Hannibal wrote:
In 2003, tow/haul may have been the new name for O/D off. If tow/haul locks out O/D in the '03 GM as it did in some Rams in between O/D off and real tow/haul mode, it could affect fuel mileage and I would be inclined to turn it off on flat no wind roads.
Tow Mode did not lock out the fifth gear on our 2001 3500 chev and to the original poster there is no good reason not to use TM when towing.
chevman
