68rfe up shifts HARD! - Dodge Cummins Diesel Forum
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post #1 of 4 (permalink) Old 04-04-2019, 07:17 PM Thread Starter
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68rfe up shifts HARD!

Driving unloaded trans shifts nice and firm. Loaded with the 15k 41ft 5er, the trans up shifts violently 1-3. So violent the whole truck will shake when accelerating. It did the same before deleting and adding the line pressure. Had the dealer look at it with the 5er hooked up and all they did was set it to re-learn. Which did nothing. Been dealing with it for a while but thought I would post to see if they are any solutions. Searched around and did not find a lot.

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post #2 of 4 (permalink) Old 04-06-2019, 12:08 PM
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Well, since it did it before you deleted I'm going to say it isn't a tuning issue. And now that you've made your warranty go bye bye you're kind of screwed.

I would get a data log and send it to your tuner and see if they can do anything

'14 2500 Laramie 68rfe - Efi Live by Anarchy, BD 68Protect, 4" straight pipe
'91.5 W350 RegCab SRW 5 Speed, he351 over s472, 6x15s, 182/214 Cam, custom head work, #60 valve springs, HVLP Lift pump, 3800 gov spring, BHAF
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post #3 of 4 (permalink) Old 04-06-2019, 12:17 PM
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Did you ever have it checked out before deleting? That certainly would have been a good time to check it out.

What does the dealer say he can do now? Will they still fix it under warranty?

There is always the SunCoast or RevMax option at $8000, but it will be a much stronger transmission.

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post #4 of 4 (permalink) Old 04-07-2019, 02:47 PM
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Whose your tuner? Do you know what a data log is?

'14 6.7 S465 tuned by CTT
'17 6.7 tuned by CTT
'18 6.7 S467.7 tuned by CTT
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