TomG2
Central Illinois
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Joined: 03/07/2004
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Like others have said, "Tow/Haul" is designed for Towning and Hauling, so use it. The six speed transmission will almost certainly give you a gear to use for crusing and low is low enough to get you going with either rear axle ratio.
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lpxguy
Chalfont PA
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Joined: 02/18/2007
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I turn my tow/haul off when approching a stop....about 50% of the time it downshifts way too soon and revs so high it sounds like it's going to kick a rod out. Truck & trailer brakes work very well.
2005 GMC Sierra 3500 CC DRW D/A
2013 Crusader 335BHS
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K3WE
Missouri
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Joined: 05/24/2005
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lpxguy wrote:I turn my tow/haul off when approching a stop....about 50% of the time it downshifts way too soon and revs so high it sounds like it's going to kick a rod out. Truck & trailer brakes work very well.
Thanks for this post!
While I hear all those that say put it in tow haul and forget it and don't doubt the engineers, I happen to make an effort to let off the gas and coast when I know that I will stop.
I DO NOT WANT engine braking in this scenario!!!!!
The engineers worked very hard but the thing still cannot read my mind, nor read the road ahead. Therefore, sometimes, in spite of the engineers best efforts, the transmission does the wrong things!
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slarsen
Indiana
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Joined: 11/11/2009
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My 2012 F250 has a section in the owner's manual that explains quite well the reasoning for tow/haul. So I use it. In really hilly country, I'll even use it when I'm not towing.
Yes, occasionally it doesn't do what I think is optimal, but it seems right the great majority of the time.
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Mkos1980
Macedonia Ohio
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Joined: 10/17/2004
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I use my T/H anytime I have a trailer. I have the 4.10's
2003 Springdale 269RLLS TT
1990 Chaparral 2150SX 350 MAG
2006 Chevrolet 2500HD 6.0
1989 Pontiac Formula 350 "LSX"
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steelpony5555
Copperas Cove Texas
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Joined: 10/26/2007
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Anything over 5000 lbs put it in tow haul. It will still go into overdrive even in tow haul. The only thing it does is it shifts firmer and will hold in gear longer for heavier loads. If it is hunting in and out of overdrive then depending on the truck some have an overdrive lock out and others you just shift it from D to 5th I think, not sure on your truck, I tow in tow/haul all the time when hooked up and let it go into overdrive. Takes a lot of grades and hills to make it hunt. Set cruise at 65 and tow/haul...
06 Montana 3000RK
07 Dodge 3500 Dually Sport 6.7 Diesel
07 Pearl White Ultra Classic (My new Baby)
10 Chrysler 300 Touring
Texas Boomers---Stop by for a Margie some time!
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APT
SE Michigan
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Joined: 06/09/2010
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lpxguy wrote:I turn my tow/haul off when approching a stop....about 50% of the time it downshifts way too soon and revs so high it sounds like it's going to kick a rod out. Truck & trailer brakes work very well.
If you use Manual mode with tow/haul, it will not be as aggressive. As I said, I doubt the truck will hold 6th gear at 65mph anyway. Use Tow/haul, and limit gears to 5th max via manual mode.
A & A parents of DD 2005, DS1 2007, DS2 2009
2011 Suburban 2500 6.0L 3.73 pulling 2011 Heartland North Trail 28BRS
2012 VW Passat TDI
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