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Old 05-30-2014, 01:47 PM   #1
JLB
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tow haul question

My tv has a tow-haul option,do you use od in tow haul or 3rd gear,pulling about 5000#. Thanks.
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Old 05-30-2014, 01:59 PM   #2
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When I was driving my F150 I used tow-haul and didn't allow OD unless I was on flat ground. You can hear and feel a truck that is lugging based upon to-much work for the gear it's in.
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Old 05-30-2014, 02:30 PM   #3
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Thanks Mike.
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Old 05-30-2014, 02:39 PM   #4
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tow haul question

What kind of truck? I can't see sig on mobile app. On my 2500 I put it in drive and push the tow button and the Allison takes care of everything else no matter what the terrain is..... No lugging. No gear hunting. So I guess it depends on truck and terrain.
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Old 05-30-2014, 02:47 PM   #5
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On my F350 i always use OD. There is no specific overdrive position to select. The D position is overdrive. It has a 6 speed transmission. On my old F250 (2001) the manual stated to only use tow/haul mode with the transmission in D not OD.
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Old 05-30-2014, 03:00 PM   #6
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My '08 Sierra in TH mode allows for OD to be used. I tried it on my fist trip out this year just for grins. I think with the 6 speed trans it locks out OD though. I never tow in drive anyway. So my Sierra is a 4 speed, I tow in 3rd and TH mode on.
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Old 05-30-2014, 04:19 PM   #7
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MyTV is an '05 Ram 3500. Towed a 12000 pound HitcHiker, now a 7500 pound max WhiteHawk with it . Always engage the TH button when towing, figure Dodge put it there for a reason, though I notice with a diesel engine, the truck gets underway and tows the WhiteHawk fine if I don't engage it.
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Old 05-30-2014, 06:45 PM   #8
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I engage TH, put it in D, and go. Transmission is six speed, and it will eventually get to sixth once on the highway and up to speed, but I do find that it downshifts very quickly if necessary too. Per the manual, if I put the truck in anything but D or R, TH is over-ridden.
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Old 05-30-2014, 07:02 PM   #9
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JLB, your truck has the 4L60E tranny. It is a 4 speed unit so towing with TH engaged in 3rd is appropriate. Not burning up the tranny is the benefit. I have had many vehicles with the 4L60E and I always towed in 3rd. Adding an auxiliary trans cooler if you don't have one is a great idea. Look ahead of the A/C condenser for another cooler. If there isn't one, you only have the radiator cooler and it is marginal at best when the truck is empty.
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Old 05-30-2014, 09:45 PM   #10
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Quote:
Originally Posted by DocBrown View Post
snip.... So my Sierra is a 4 speed, I tow in 3rd and TH mode on.
X2

Bob
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