Tow haul button
I have a 04.5 duramax 3500 and I'm not sure when to use the tow/haul button on my gear shift also using this will it help my MPG? Thanks.
Forum Discussion
I never use the T/H on my truck. My fifth wheel is 11,000lbs and its just not needed IMO.
It raises the shift points and makes the truck stay in each gear longer than needed.
There is zero difference in trans temp while using it or not.
It raises the shift points and makes the truck stay in each gear longer than needed.
There is zero difference in trans temp while using it or not.
