Shudder during acceleration

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Dougdna

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Las Vegas, NV
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2018
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Cummins 6.7L I6 Turbo Diesel
Hey everyone. I have a brand new (523 miles) 2018 2500 Bighorn CTD and pulled my trailer this weekend. Trailer weighs 6900 pounds. Had to stop in traffic going uphill due to an accident. When we were finally released to go I put it in gear and gave it a little gas to maintain distance with car in front of me. While adding a little more gas there was a pretty bad shudder which felt like maybe a torque converter slip and then a pretty hard thump like a change in gears. I don't know if this is normal or if the Dodge has a slip system to keep damage from happening but I know this was the first time I have felt this. Just checking to see if anyone else has had this issue.
 

Dennis Shellito

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Cummins IBS
I assume you have a diesel? Do you run the tow/haul pulling your trailer? If not you should. Yes, sometimes they have a slight shudder at low speeds during acceleration, though I don't think I have ever felt it in my 2011 but I have been running an H&S Mini Maxx with the trans tune since the truck was almost new and never towed with it when it was stock.
 

JohnnyMac

There are no stupid questions, just stupid people.
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2018 1500 Laramie
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3.0 EcoBurner
My 2014 2500 shuddered from a stop under load to the point I was concerned, but dealer said it was normal. Of course they always say that.....
 

Raptorjet31

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Doug dna have you had this happen anymore? My truck has about 400 miles on it and I’ve noticed it a little. I think it maybe because it’s brand new but time will tell , any updates?
 

RamCares

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Doug dna have you had this happen anymore? My truck has about 400 miles on it and I’ve noticed it a little. I think it maybe because it’s brand new but time will tell , any updates?

Hi Raptorjet31,
If this continues to happen and you would like to have your dealer look into this further, please send our team a private message and we would be happy to provide you with some additional assistance throughout this process!
Alex
Ram Social Care Specialist
 

Fast69Mopar

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Hey everyone. I have a brand new (523 miles) 2018 2500 Bighorn CTD and pulled my trailer this weekend. Trailer weighs 6900 pounds. Had to stop in traffic going uphill due to an accident. When we were finally released to go I put it in gear and gave it a little gas to maintain distance with car in front of me. While adding a little more gas there was a pretty bad shudder which felt like maybe a torque converter slip and then a pretty hard thump like a change in gears. I don't know if this is normal or if the Dodge has a slip system to keep damage from happening but I know this was the first time I have felt this. Just checking to see if anyone else has had this issue.

When I have a customer who has a complaint about a "shudder", the first thing I inspect it the pinion angle and the prop-shaft center support bearing.

I have found that a ¼"-⅜" shim between the center support bearing and the mounting bracket almost eliminates the shudder when accelerating from a stop with a load.

This may not be applicable to your issue but it is worth a shot to at least check it out.
 

Donnie Straps

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My 18 did it also, I put a little friction modifier in the rear diff and hasn't done it again. I now have 33,000 miles on it. I know they are suppose to not need it but worked for me and has worked for others I have read about on some forums and it only costs a fee bucks to try.
 

Sloverado

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Hi Raptorjet31,
If this continues to happen and you would like to have your dealer look into this further, please send our team a private message and we would be happy to provide you with some additional assistance throughout this process!
Alex
Ram Social Care Specialist

I like to see this
 
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