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Old 04-20-2015, 09:29 AM   #51
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tow mode ??
is that turning the o/d off??
if so then YES
if not then oh ****!!!

I turned the overdrive off when towing my pop up, will do the same with brand new TT

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Old 04-20-2015, 09:31 AM   #52
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Pretty much scottraycraft. Turning O/D off is the next best thing.

2013 Jayco Eagle 328 RLTS
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Old 04-30-2015, 05:37 AM   #53
Join Date: Feb 2015
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In the newer LML chevy/GMC's the Tow/Haul mode actually works with the "exhaust brake mode" to keep the TV at a +/- 3 mph spped from the set point in Cruise control.

In addition Tow/Haul mode causes the Torque converter to lock up (this is good when towing BTW) for all gears after 1st. No OD lockout in the new Bow ties.

I use Tow mode daily, loaded or unloaded - I took a 1-2mpg hit over not using it, but the attitude of the truck is much different, to my liking.
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Old 04-30-2015, 05:50 AM   #54
Join Date: Mar 2015
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I always use tow mode when hauling, even with my small equipment trailers. Tow mode changes your engine performance from fun mode to work mode.
2015 Jayco 345 BHTS 5er
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Old 04-30-2015, 06:03 AM   #55
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Originally Posted by NVGun40 View Post
Manual transmission here. No tow modes, making it my own choice and feel of the truck as it drives.
I use TH and one fellow recommended to use M on the trany and manually shift it. Not sure if I'm comfortable with that since the computer would probably do a better job than I would.
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Old 04-30-2015, 07:28 AM   #56
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Originally Posted by Subaru297 View Post
You are towing a 7500lb trailer with a Duramax. It probably hardly even notices it. In your case I would leave it off in the flats (better mileage)and engage it on hills and mountains to take advantage of the exhaust brake.

With the 6.2 gasser that we have tow mode is always engaged while towing and even when hauling heavy stuff in the bed. I don't want my transmission hunting for the right gear.

There is a curvy, steep two-lane 2-mile long hill out of my hunting camp. Not only do I use T/H, but I downshift to 4th gear to keep my truck from hunting for a gear.

As for most of the time? I use T/H except flat interstate. I will even us it unloaded going down hills to save on my brakes.

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