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
With GM the recommendation is to use it whenever the payload is at 25% of the rating or more. It is the payload that affects the transmission and the Tow Haul mode is designed to protect the transmission and prolong its life.
Use of Tow Haul mode will increase the effect of the exhaust brake in slowing the truck on downgrades as an additional benefit.
Use of Tow Haul mode will increase the effect of the exhaust brake in slowing the truck on downgrades as an additional benefit.
