Tow/Haul

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68PowerWagon

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On my 2016 2500 with the 6.4 T/H locked out 6th gear & gave me firmer up shifts & down shifts. On my 2022 3500 with the Cummins it doesn't lock out 6th but does adjust the shift points. Is that all it does with the CTD?
 

crash68

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Internal settings of the transmission of line pressure and when the torque converter locks/unlocks are some of the parameters that are adjusted by the Tow/Haul mode.
 

Fuel35 67

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Also holds the gears longer and when the EB is on with TH, the EB works really well.
 

Dennis Shellito

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As crash68 said, transmission line pressures are increased when T/H setting is used. The increased line pressure helps eliminate clutch slippage when towing, also it locks the torque converter which helps reduce transmission over-heating. An added benefit of T/H is that when the torque converter is locked the exhaust brake will engage to slow the truck, well, that is if the EB is turned on. I run my Cummins in T/H with EB every time I drive it.
 

PaulTGarrett

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I have T/H and EB both on most of the time since I pull a 40' gooseneck trailer for work. However, I've gotten spoiled on the T/H assisting with the braking... With no trailer on, I leave T/H off, EB on. When I come off an interstate, I'll turn T/H on before I hit the off ramp, letting it and the EB jump in and slow the truck.
 

Longhorn1500

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I have T/H and EB both on most of the time since I pull a 40' gooseneck trailer for work. However, I've gotten spoiled on the T/H assisting with the braking... With no trailer on, I leave T/H off, EB on. When I come off an interstate, I'll turn T/H on before I hit the off ramp, letting it and the EB jump in and slow the truck.
Good tips, thank you!!
 
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68PowerWagon

68PowerWagon

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That's kind of what I thought. You guys that have the T/H & EB on while empty... how do you keep yourself from going through the windshield when it downshifts? 1697029288659.gif:D I do however always run the EB on high at all times. I probably should do it like you all, since the brakes on these newer models are so soft. I remember someone on here about 3 or 4 years ago complaining on how bad the brakes were. I was thinking to myself what are they expecting? Cause mine on my 2016 2500 worked great. Even pulling a trailer. Then when I got this new truck I was like WOW! Now I see what they mean. They must have changed suppliers as my 22' 3500 doesn't stop nearly as good as my old 2500.
 

runamuck

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my buddies that have a 6.7 cummins tell me that I should always run with the EB on the green setting because it will save my brake pads which I guess the dsl trucks go thru faster..this is my first dsl 2500 so I am always looking for tips. I do use tow/haul when towing
 

Dinky

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That's kind of what I thought. You guys that have the T/H & EB on while empty... how do you keep yourself from going through the windshield when it downshifts? View attachment 529891:D I do however always run the EB on high at all times. I probably should do it like you all, since the brakes on these newer models are so soft. I remember someone on here about 3 or 4 years ago complaining on how bad the brakes were. I was thinking to myself what are they expecting? Cause mine on my 2016 2500 worked great. Even pulling a trailer. Then when I got this new truck I was like WOW! Now I see what they mean. They must have changed suppliers as my 22' 3500 doesn't stop nearly as good as my old 2500.


Running the EB also keeps the exhaust hot and helps with the emissions crap. I run my EB all the time empty and never hit the brakes.
 
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