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Old 02-17-2017, 05:37 PM   #41
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Just got a new a new GMC and haven't towed my 30' TT yet. So with my DuraMax when do I use the exhaust brake? With the tow/haul mode? Please don't tell me to read the manual and push the button. LOL
Anytime I am towing the TT or boat (6,000 lbs) I activate Tow mode and the Exhaust Brake....a slight pressure on the brakes and the truck takes over for a smooth stop! Definitely a brake saver. If you use it once you will be sold, its a great feature!!
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Old 02-17-2017, 05:38 PM   #42
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Originally Posted by robbdrell View Post
Just got a new a new GMC and haven't towed my 30' TT yet. So with my DuraMax when do I use the exhaust brake? With the tow/haul mode? Please don't tell me to read the manual and push the button. LOL
See post #38
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Old 02-17-2017, 05:43 PM   #43
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Tow Haul?

There's a reason Tow/Haul is on the truck. Use it.
There's always some "expert" who will tell you you don't "need" something that was designed to use,. I guess they know better than the design engineers. I mean, check the threads on any forum about wether you "need" a weight equalizing hitch. For every person who says "Get one, use it, add to your safety factor.", there is someone who says "Why I've driven a billion miles, towing a big rig trailer with my volkswagon and NEVER had a bit of trouble. Even did the Kessel run in 12 parsecs!".
There's a reason it on there. Use it.
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Old 02-17-2017, 06:15 PM   #44
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I use the tow/haul anytime I'm pulling my trailer. I even us the cruise control when its nice and flat.
X3
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Old 02-17-2017, 06:51 PM   #45
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I have an RV trailer that weights about 6200 dry, and about 7000 lbs loaded. When I am driving on normal roads (not up and down grades/hills/mountains) is it best to still keep the automatic trans in the "towing mode" (by pushing the button in at end of the shifter)? I have hear mixed opinions, and of course I don't tow over 55 mph.
Thanks so much.
Tow/Haul, anytime, every time, you tow or haul 'anything' in any terrain. Put it in D, set cruise control to the speed you want to travel. Saves your transmission from over heating, over stressing.
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Old 02-17-2017, 07:02 PM   #46
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You did not mention anything about your truck. IF you have a Duramax Diesel engine with the Allison transmission you must have it in tow/haul mode in order to have the benefit of transmission braking when slowing down.
I disagree. I have a Duramax with the Allison tranny. I use the exhaust brake all the time when not towing.
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Old 02-17-2017, 08:17 PM   #47
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Originally Posted by robbdrell View Post
Just got a new a new GMC and haven't towed my 30' TT yet. So with my DuraMax when do I use the exhaust brake? With the tow/haul mode? Please don't tell me to read the manual and push the button. LOL
"When all else fails, read the instructions!" LOL
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Old 02-17-2017, 08:56 PM   #48
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Our 06 Duramax I use T/H mode any time I TOW anything, the improved shift points, the T/C lock up in 2nd gear, with the exhaust brake and the aggressive downshifting from being in T/H mode, brakes are for the last 30' of stopping or some jack wagon pulling out in front of me. Wouldn't do it any other way, does our truck NEED to use T/H, no, it would do just fine, but the added benefits of using it are night and day.
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Old 02-17-2017, 11:04 PM   #49
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Originally Posted by robbdrell View Post
Just got a new a new GMC and haven't towed my 30' TT yet. So with my DuraMax when do I use the exhaust brake? With the tow/haul mode? Please don't tell me to read the manual and push the button. LOL
With the Tow/Haul mode on. I only turn the exhaust brake on in the mountains.
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Old 02-18-2017, 05:16 AM   #50
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Originally Posted by robbdrell View Post
Just got a new a new GMC and haven't towed my 30' TT yet. So with my DuraMax when do I use the exhaust brake? With the tow/haul mode? Please don't tell me to read the manual and push the button. LOL
In the little black container inside yorur glove box you will find the manuals for your vehicle. Id suggest you read them. The answer to that question is containd inside one of them. (hint) look in the Allison transmission book.
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Old 02-18-2017, 05:42 AM   #51
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In the little black container inside yorur glove box you will find the manuals for your vehicle. Id suggest you read them. The answer to that question is containd inside one of them. (hint) look in the Allison transmission book.
LOL.......at least the vehicle manuals will provide much more valuable and accurate info which is organized so you can find it better than your trailer manual?

I never knew about holding the T/H button in for 5 seconds on my 2017 2500 to disable the descent assist until I read it in this thread. It works LOL, tried it yesterday.

I have yet to pull the manual from the glove box though.
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Old 02-18-2017, 07:19 AM   #52
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Sorry to hijack your thread. Is it safe to use the cruise control while pulling?
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Old 02-18-2017, 07:56 AM   #53
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Sorry to hijack your thread. Is it safe to use the cruise control while pulling?
It's safe for me but I can't speak for other pullers.
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Old 02-18-2017, 08:23 AM   #54
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Sorry to hijack your thread. Is it safe to use the cruise control while pulling?
IMHO......NO......
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Old 02-18-2017, 08:31 AM   #55
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It's safe for me but I can't speak for other pullers.
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Old 02-18-2017, 08:44 AM   #56
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Sorry to hijack your thread. Is it safe to use the cruise control while pulling?
Yes it is. Keeps me from speeding or slowing down and causing traffic issues.
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Old 02-18-2017, 09:06 AM   #57
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Sorry to hijack your thread. Is it safe to use the cruise control while pulling?
If I don't I find myself exceeding the rated trailer tire speed, by a lot!
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Old 02-18-2017, 09:08 AM   #58
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Pulling a 40' 5er with a '13 Chevy Duramax. Set tow/haul mode, push exhaust brake button, set cruise control at a safe speed depending on road, traffic and weather conditions. Pulls like a dream.
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Old 02-18-2017, 09:10 AM   #59
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Pulling a 40' 5er with a '13 Chevy Duramax. Set tow/haul mode, push exhaust brake button, set cruise control at a safe speed depending on road, traffic and weather conditions. Pulls like a dream.
X2. Even in the mountains.
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Old 02-18-2017, 09:46 AM   #60
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IMHO......NO......


Do you say no because it damaged the engine or because it is easy to fall asleep?
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