porthole
Retired
To add to my previous.
Since the GM tends to keep the truck in 5th gear below 62-65 mph in tow haul I'll usually turn the T/H off once up to speed. This will also allow the truck shift into 6th and use some momentum going down the hill instead of having the truck downshifting trying to maintain speed (highways)
Since the GM tends to keep the truck in 5th gear below 62-65 mph in tow haul I'll usually turn the T/H off once up to speed. This will also allow the truck shift into 6th and use some momentum going down the hill instead of having the truck downshifting trying to maintain speed (highways)