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
When towing the travel trailer or large cattle trailer I use the tow/ haul mode, but when towing the boat or utility trailer with tractor I don't use it. It seams that I can make better fuel economy when not using the tow/haul mode.
