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
n7bsn wrote:
I would suggest you read the manual, they are actually quite clear about when they recommend to use it
But no, they don't help MPG, for example, down hill they can force the vehicle into a lower gear (engine braking) which consumes more fuel
How do you consume more fuel downhill in a lower gear?
I use mine under 50 mph pulling and when slowing down empty and pulling. I like to be in overdrive gears as fast as possible.
