2015 Driveline Vibration

[ECaracino]

I've run up and down with tire psi. I found it more tolerable at 60 front & 65 rear. Keep in mind I have the 6.4 hemi which weighs a lot less than the Cummins
I am suspect of the lack of mounts on the transfer case. I'm thinking the shock of a bump at highway speed is pushing up on the transfer case via the driveshaft before the splines can compensate. This sets off the up/down shake or vibration. There's only some small mount behind the transmission oil pan and 2 motor mount. The engine/transmission are a counter balance to the transfer case. Not a good idea and worse with the lighter weight gas engine and Chrysler transmission. My theory anyway.

 

[Offshore1]

More info: http://www.cumminsforum.com/forum/2...on-if-you-have-post-your-year-truck-here.html

This is good course of action! Everyone should do it!!

Not many people are complaining to the ones that can force a recall. Please click on the link and describe your issue. It is the only way to force RAM to fix it.

http://www-odi.nhtsa.dot.gov/owners...RAM&searchCriteria.prod_ids=1973413&submit=Go

 

[Bug Out]

I've been studying this "vibration " issue with a great deal of interest, even though my 2-2013's I owned don't have the issue. At first, I thought a common denominator was the Aisin transmission. Now that a gasser is involved, my only other theory ( based on all the posts) is something in the 4x4 drive line is causing the vibes,forward of the rear drive shaft. Correct me if I'm wrong, but I have yet to see any combo of 2x4 have this issue?

This interests me because i was one of the fortunate (sarcastic) folks to have a 2005 Dodge RAM 4dr 4x4 6 spd 4:10 3500 dually with the 64MPH-75MPH vibration that was never really solved, and thousands had the problem. The issue did save me tons of fuel because I always towed at 62 MPH where there was no vibration, for thousands of miles..LOL

Maybe FCA will buy one of those vibration machines to see whats going on..

 

[Bug Out]

I've been studying this "vibration " issue with a great deal of interest, even though my 2-2013's I owned don't have the issue. At first, I thought a common denominator was the Aisin transmission. Now that a gasser is involved, my only other theory ( based on all the posts) is something in the 4x4 drive line is causing the vibes,forward of the rear drive shaft. Correct me if I'm wrong, but I have yet to see any combo of 2x4 have this issue?

This interests me because i was one of the fortunate (sarcastic) folks to have a 2005 Dodge RAM 4dr 4x4 6 spd 4:10 3500 dually with the 64MPH-75MPH vibration that was never really solved, and thousands had the problem. The issue did save me tons of fuel because I always towed at 62 MPH where there was no vibration, for thousands of miles..LOL

Maybe FCA will buy one of those vibration machines to see whats going on.. That kind of led me to the 4th gen RAM.

 

[ECaracino]

Just a quick update. As I approach 9000miles I'm noticing the vibration is not always there. Could it be that the driveshaft splines are breaking in enough to react more quickly to the movement of the axles? Very bizarre.

 

[Fdcityronco]

ECaracino...New member but jumping on this thread after searching multiple other forums. I have 2015 2500 Cummins 4x4 crew cab with the exact same issue you describe since 300mi and now I'm sitting at 16,700mi with 9 visits to the dealer now, new driveshaft assembly, new left axle and hub assembly and numerous wheel balances, alignments, new tires etc. SE rep drove down and wouldn't drive my truck because bigger AT tires, even though he stated to the GM that he believes he knows what's causing it and there were 3 appts prior to the new wheels and tires being installed (which by the way-larger wheels and tires magnified the vibration) I re-installed all stock wheels and tires, set up another appt for SE Rep and surprise surprise he doesn't feel it hardly...he supposedly installed vibration machine and frequency reading showed tires (100% confident it's not wheels or tires-100%) Complete BS! It is certainly odd 90% of the time it shakes, sometimes worse than others, right turns on highway seem to increase the vibration, accelerator pedal shakes, seats etc. and bumps seem to play a roll in it. It almost comes in waves on the highway but never completely goes away. It simply decreases and increases in intensity. I filed lemon law here on FL and they are taking their "final repair" on April 29th....we shall see! Unfortunately not too optimistic though. I'm really curious if you had any leadway with your truck...I'm thinking your on to something regarding the transfer case and mounts??

Thx, Rick

 

[Fdcityronco]

ECaracino...New member but jumping on this thread after searching multiple other forums. I have 2015 2500 Cummins 4x4 crew cab with the exact same issue you describe since 300mi and now I'm sitting at 16,700mi with 9 visits to the dealer now, new driveshaft assembly, new left axle and hub assembly and numerous wheel balances, alignments, new tires etc. SE rep drove down and wouldn't drive my truck because bigger AT tires, even though he stated to the GM that he believes he knows what's causing it and there were 3 appts prior to the new wheels and tires being installed (which by the way-larger wheels and tires magnified the vibration) I re-installed all stock wheels and tires, set up another appt for SE Rep and surprise surprise he doesn't feel it hardly...he supposedly installed vibration machine and frequency reading showed tires (100% confident it's not wheels or tires-100%) Complete BS! It is certainly odd 90% of the time it shakes, sometimes worse than others, right turns on highway seem to increase the vibration, accelerator pedal shakes, seats etc. and bumps seem to play a roll in it. It almost comes in waves on the highway but never completely goes away. It simply decreases and increases in intensity. I filed lemon law here on FL and they are taking their "final repair" on April 29th....we shall see! Unfortunately not too optimistic though. I'm really curious if you had any leadway with your truck...I'm thinking your on to something regarding the transfer case and mounts??

Thx, Rick

 

[Stark_Ent9802]

Rick, That Sucks that you're going through all that ****. What speed does your vibration start at? MY 2015 2500 CCSB vibration is most prevalent at 72mph, but i do feel it between 65-75 mph. I added Centramatics which improved it slightly. But I do think it's something to do with the wheel and tire combo since it goes away almost 100% at 75+. I have had my truck since september it only has 2200 miles on it. I have not taken it to the dealer yet, just don't want the headache or the stress right now. Good luck!

 

[Fdcityronco]

I don't blame you for not wanting to deal with it. Mine has been in 9 times now and they act as if it's the first time it's been in, every time Im there, that us consumers are just sitting around looking for problems with the vehicles...frustrating to say the least. My speeds are absolutely identical to yours. It's between 65 and 74 mph where it is most prevalent. I have noticed the issue from day one and decided to put larger wheels and tires thinking that if my issues were caused by the stock wheel and tire combo, it would eliminate the problem. Unfortunately it only magnified the problem with the wheelset being larger...i'm assuming because it takes a little more torque to get the larger wheels moving. Now that I have switched back to stock I definitely notice the vibration at lower speeds simply because I'm so used to feeling the prevalent vibration with the bigger wheels and tires. I feel it most prevalent at 45 mph, in the lower speed range. In my opinion as much as we pay for these trucks, we shouldnt be having these issues. I have my lemon law paperwork filed and my final repair order is scheduled on the 29th of this month. Like I stated previously I'm not optimistic that Ram is going to step up to the plate and lend a hand with this especially if it is a design flaw. Which at least in my case I strongly believe it is, and that is the reason they keep going back to wheels and tires because they know they can't fix the issue without major cost. The only way us consumers, that are buying these trucks, can get some type of resolution is if we're all on the same page collectively. If anybody else has any input please let me know and I will keep everyone informed of progress along the way. I refuse to drive a truck that constantly shakes my *** going down the road.

Rick

 

[Fdcityronco]

Quick update, after reading "powder extreme's" post regarding the 4 x 4 transfer case causing oscillation. It got me thinking so I decided to crawl under the truck yet again and grabbed onto the transfer case and shook it around. Sure enough, I was able to move the entire driveline around considerably and it seems it's directly related to the exact feeling I feel in the cab, driver seat and accelerator pedal. Call me crazy but here's what I did. I deflated one of my sons soccer balls and shoved it between the transfer case and the steel transfer case guard that sits below it, then I inflated it with enough air pressure that the ball was wedged between the two. My theory is that it will act as an airbag and if the transfer case is causing oscillation, that will reduce the chance of it shaking or if it does shake from bumps in road etc. that it will stop immediately. I have to say, a little redneck ingenuity at its finest, and sure as **** 85% of the vibration is reduced! It certainly is not completely gone however it definitely dampens the driveline from continuingly shaking as you're driving down the road. I realize this is strictly for temporary diagnostic purposes however it reduced the vibration 100 times more than anything done with the ram dealer so far. I'm very confident the issue that the majority of us are having is a driveline issue. What I'm not confident about is if it's simply a design flaw and the speed range that most of us are feeling it at causes the driveline to shake, or if I have a part out of balance in the driveline causing the shaking then starts the transfer case oscillating, which then magnifies it. Now what's the next step, not sure?

 

[Kilroy]

Just started today to hear noise and feel vibration under load (wife can feel in feet) First only pulling up hill, now seems to be while accelerating. This is a 2 month old 2017 Cummins 2500, auto transmission with air suspension. Just turned 2200 miles on way to FL pulling 2500 lb boat. Will keep posted.

 

[ECaracino]

Well, I've posted about my problems with my 2015 since it was new. Go nowhere with Chrylser "operates as designed' was there a-hole answer to someone who just spent $40K+ (gas drive this time). So I got a mini-camera and set it up under the truck and drove it at 70 to 75mph. Moved it around to several places. Lo and behold I found the transfer case going in and out of a harmonic vibration that does not appear to be cause by the driveshaft (my second one by the way). The key question is: What the hell is causing this to bounce around??! Lack of support? Something out of balance in the transmission (Lock up converter?)?? Hopefully, the video posted. Any real drive train experts got an idea? In the words of Ross Perot "I'm all ears!"

 

[ranger 393]

Broken transmission mount or motor mount?

 

[KPotter]

Very good video!!! Now if someone can come up with stiffer mounts or a way to reinforce the mounts we may have a solution. Any aftermarket poly mounts available?

 

[Newsa]

I have the stick shift transmission and the stick actuated transfer case. Both sticks wobble and dance around. But I don't have vibration. I know the sticks are not connected to the outside of the transfer case transmission. Maybe that is the difference. I think the transfer case doesn't have it's own mount?

 

[ECaracino]

Just a few more notes on my diagnostic work: removed front driveshaft and it still did it. Changed tires and still did it. Reinstalled factory tires and still did it. Rebalanced tires several times and still did it. Put transmission into neutral while it was happening (to see if it was converter) still did it. Dealer replaced rear driveshaft and still did it. I'm curious as to all of you who are having the same issue; do you have the "anti-spin" rear axle option. Please let me know. I'm starting to become suspicious of the locking mechanism at highway speeds. I will video the rear axle as soon as time/weather permit.

 

[Offshore1]

Anti spin driveshaft with vibration = yes

 

[RustyJC]

Just a few more notes on my diagnostic work: removed front driveshaft and it still did it. Changed tires and still did it. Reinstalled factory tires and still did it. Rebalanced tires several times and still did it. Put transmission into neutral while it was happening (to see if it was converter) still did it. Dealer replaced rear driveshaft and still did it. I'm curious as to all of you who are having the same issue; do you have the "anti-spin" rear axle option. Please let me know. I'm starting to become suspicious of the locking mechanism at highway speeds. I will video the rear axle as soon as time/weather permit.

Yes, I have the limited slip axle. No, I do not have a vibration problem. The truck is dead smooth up to 80 MPH (I haven't taken it any faster). The OEM tires have been replaced with Michelin LTX M/S2s - that was done at the time I took delivery of the truck.

Rusty

 

[Cummins12V98]

Yes, I have the limited slip axle. No, I do not have a vibration problem. The truck is dead smooth up to 80 MPH (I haven't taken it any faster). The OEM tires have been replaced with Michelin LTX M/S2s - that was done at the time I took delivery of the truck.

Rusty

I have no vibration issues up to 104 mph that's as fast as it will go. I also dumped the NEXENS at 200 miles with MS2's. I thought all the rear axles were the same???

11 HO Dually would only go 103. It was SMOOTH!

#ad

 

[Newsa]

Anti-slip doesn't necessarily mean vibration