tow haul problem
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New User
Joined: Nov 2004
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tow haul problem
My friend has a 04 6.o with an 04 engine and the truck turns off the tow haul when pulling his 11,000lb 5th wheel trailer up steep grades he says it drop,s to 1000rpm,s.Dealer changed wire harnes but it still does it.
Posting Guru
Joined: Jan 2005
Posts: 1,353
Likes: 1
From: Nothern Indiana
The Tow /Haul is designed to hold the gear longer and keep RPM's highier.
When you hit the brake it will drop a gear and hold RPM's .
So if he's turning it off it will drop RPM's .
Not sure of what your asking ??
When you hit the brake it will drop a gear and hold RPM's .
So if he's turning it off it will drop RPM's .
Not sure of what your asking ??
Junior User
Joined: Oct 2006
Posts: 56
Likes: 1
has anyone experienced hard shift when turning tow/haul on. seems like when rolling slowly and turning it on my trucks jolts as if it doesnt like being engaged. should i take it to the dealer? i only have 6k miles on it. engaging at higher speeds is no problem. i dont understand?
Elder User
Joined: Feb 2003
Posts: 648
Likes: 1
I had this happen once, but I don't usually turn it on at that time. I either turn it on and leave it on, or when I begin to slow down, for the braking effect.
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Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
towhaul does change the tranny shifting strategy. Shifts are firmer and sooner down shifting and later up shifting. You really shouldn't notice any difference when engaging it unless you're doing it at really low speeds and the tranny downshifts because it thinks you're towing something. If you think you have a problem, find someone who has a similar truck and ask them or get them to drive it and see or take it back to the dealership and ask them to test drive it. I personally don't think you have a problem by the way you describe it.
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