Chevy tow/haul question

When I had my Chevy if it was in Tow/Haul the trans clearly downshifted pretty hard when slowing down to stop.

You don't need it hardly at all. When you go downhill and want to shift down to protect your brakes, use tow/haul. If you are in a up and down hilly section and your transmission is shifting, use tow/haul. Rest of the time just use your normal transmission gear selection.

The fuel economy would not normally change. It takes the same horsepower to go the same speed within normal engine operating ranges. The engine will produce the power necessary.

Beemer, when I had my cabover and boat in tow I just used tow/haul on steep grades. My combined haul and towing weight was about 7,000 lbs.

Lynnmor wrote:
...What did your owners manual say?

The manual says to use for steep hills/mountains or towing/hauling heavy loads. With a tow rating of 19,600 pounds, my trailer at 6,500 is hardly a heavy load.

The transmission never hunts and the transmission temperature has never gotten high without activating tow/haul.

I feel the computer is smarter than I am so I always use Tow/Hual

I would always use it when towing, there is no down side and it's better for the trucks power train.

beemerphile1 wrote:
I am pulling 6,500 pounds with TV in signature. I have pulled with and without tow/haul. The truck does fine with it off.

What would the pros and cons be for my combination?

Which would use less fuel?

My truck is capable of a much heavier load and tow/haul would be used at that heavier load. At 6,500 pounds it isn't even breathing hard.

It is usually better for the transmission when you use tow/haul. What did your owners manual say?