Towing question
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Senior User
Joined: Jan 2005
Posts: 162
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From: Harrodsburg
Towing question
Random ?
Headed for a 12 hour ride tomorrow, pulling an empty 2 horse gooseneck trailer
Would you run in tow/haul mode ?
I always do when pulling livestock but wasn't quite sure if necessary empty?
Headed for a 12 hour ride tomorrow, pulling an empty 2 horse gooseneck trailer
Would you run in tow/haul mode ?
I always do when pulling livestock but wasn't quite sure if necessary empty?
Elder User
Joined: Mar 2007
Posts: 879
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From: at the truck pulls
I pull a 34 foot 5th wheel, 11,000 lbs, and the only time I ever use Tow Haul is in mountains or steep up and down hills. This truck pulling 11,000 lbs doesn't even work that hard.
I actually like the upshift firmness, but the downshifting really sucks everytime you slow down or just come to a red light.
I actually like the upshift firmness, but the downshifting really sucks everytime you slow down or just come to a red light.
Lead Driver
Joined: Nov 2005
Posts: 5,231
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From: Kaysville Utah
If I have a trailer hooked up, I select the T/H. It changes the shift points, Helps me keep the EGT temps in line by not letting the engine lug, since it holds higher RPMs than the non-T/H. It engages the Exhaust Brake, and I don'tknow for sure, But I suspect it being selected allows the command center to track the miles on each trailer.
Why would you not select it?
Why would you not select it?
Posting Guru
Joined: Nov 2010
Posts: 1,783
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From: WY
If I have a trailer hooked up, I select the T/H. It changes the shift points, Helps me keep the EGT temps in line by not letting the engine lug, since it holds higher RPMs than the non-T/H. It engages the Exhaust Brake, and I don'tknow for sure, But I suspect it being selected allows the command center to track the miles on each trailer.
Why would you not select it?
Why would you not select it?
The T/H was designed to give better performance while towing and to increase the tranny pressures/shift points to keep the truck in it's power band. I like the downshifting deceleration feature. The exhaust brake does provide some benefit in hilly situations. I'm not too sure it comes into play much in slower speeds such as city traffic.
The mileage is tracked regardless of T/H. It will assign the miles to whichever trailer you have selected in the truck apps section.
Senior User
Joined: Dec 2010
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I agree PH.
The T/H was designed to give better performance while towing and to increase the tranny pressures/shift points to keep the truck in it's power band. I like the downshifting deceleration feature. The exhaust brake does provide some benefit in hilly situations. I'm not too sure it comes into play much in slower speeds such as city traffic.
The mileage is tracked regardless of T/H. It will assign the miles to whichever trailer you have selected in the truck apps section.
The T/H was designed to give better performance while towing and to increase the tranny pressures/shift points to keep the truck in it's power band. I like the downshifting deceleration feature. The exhaust brake does provide some benefit in hilly situations. I'm not too sure it comes into play much in slower speeds such as city traffic.
The mileage is tracked regardless of T/H. It will assign the miles to whichever trailer you have selected in the truck apps section.
ken
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Post Fiend
Joined: Jan 2009
Posts: 6,521
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From: Greenwood, SC
I run in T/H almost all the time, the size or weight of the trailer make no difference to me.
May noy be entirely logical but it's what I do. Only exception is in heavy stop and go (interstate back ups) and lengthy 2 lane highway runs when I prefer to run in M mode.
May noy be entirely logical but it's what I do. Only exception is in heavy stop and go (interstate back ups) and lengthy 2 lane highway runs when I prefer to run in M mode.
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Lead Driver
Joined: Apr 2011
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From: Edmonton Alberta
If I have a trailer hooked up, I select the T/H. It changes the shift points, Helps me keep the EGT temps in line by not letting the engine lug, since it holds higher RPMs than the non-T/H. It engages the Exhaust Brake, and I don'tknow for sure, But I suspect it being selected allows the command center to track the miles on each trailer.
Why would you not select it?
Why would you not select it?
I agree as well. I drive in T/H a lot with no trailer at all.
Senior User
Joined: Jun 2011
Posts: 151
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From: Needles CA KOA
In hilly or mountainous roads I prefer Manual shifting. Lets me choose the right gear at the right time without letting off the peddle to let the tranny shift in auto. I can also get the RPMs up to activate the exhaust brake effect sooner on the down grade before the speed gets to high.
Posting Guru
Joined: Dec 2010
Posts: 1,318
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From: Sterling Heights, MI
I use the TH button mainly when going through the city where it is stop and go, and also going through hilly roads. The TH mode will never shift into 6th gear either, so when I am on the highway and get up to cruising speed I will turn it off. This will get you a little better MPG's. Also if you need the extra power the truck will shift back down to where it needs to be, whether it is 5th, 4th, or 3rd when you press the pedal and ask for more power.
Mine is a gas motor so maybe it is different with the diesel but we both have the same transmission. I was able to stay around 70 with TT and 13500 gross weight on the highway with no problem. So it should barley be any work for your truck either way. You probably won't need it on the expressway.
Mine is a gas motor so maybe it is different with the diesel but we both have the same transmission. I was able to stay around 70 with TT and 13500 gross weight on the highway with no problem. So it should barley be any work for your truck either way. You probably won't need it on the expressway.
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Senior User
Joined: Jan 2005
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From: Harrodsburg
Thanks. It was late and I was thinking that it might decrease mpg by lowering gearing. And was double checking. I am not used to fuch a sophisticated tranny. 
Drove in t/h. All day and averaged 14.3 pulling the gooseneck.
Thanks got the responses.
Drove in t/h. All day and averaged 14.3 pulling the gooseneck. Thanks got the responses.
