Mind if I ask what this "prototype" thing was? I am just curious how the engineering genuises at DC are approaching this problem.

I too have gotten the "characteristic of the vehicle" speech. I really wish these guys would step up and deal with this problem.

 

I think you should try one of these, and report back as to how you like it.

http://www.iedls.com/bearings.html

 

I have a 2007 mega cab 2500, 5.9, 48re, 3.73s, limited slip

I seem to feel this shutter when excelerating from a stop with zero load under light throttle

I have not towed with it yet, but I did haul ~ 2000 lbs of people and rock and it seemed less apparent.

Any ideas?

I may just hook up to a trailer to check if it occurs with the trailer in tow also.

 

If I can help you guys someway regarding Inland Empire Driveline let me know. They are located only a couple miles from where I sit.

 

My Megacab does it also, but when I hook up the trailer it goes away. I have become used to it and don't even notice it anymore.


Maybe I'll be the guinnea pig and try that bearing from Inland Empire Driveline. I'll check them out next week.

 

Excellent idea Pauly. I would be very curious if this helped.

Be sure to let us know.

 

Gee Thanks guys!! I had forgoten all about that anoying shudder until I read this thread. Now I'll be looking for it when I go to lunch . Guess I'll go see the dealer

 

could this be covered under warranty?

how do I find out if there is a TSB for my vehicle?

 

Hi I think it has to do something with the transmission or converter pressure build up. I havea 2006 quad 4x4 with an automatic tran and it's doing the same right from the day one. Good luck.

 

No, it's the carrier bearing on LWB trucks...as was already said in this thread.

 

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reposted----here is answer to the problem---been there done that

 

Yep, I still feel it!

 

FWIW..... I picked up my new 07 3500HD QC 4x4 5.9 CTD Auto 8' Box SRW Laramie a few weeks ago. When I test drove it w/ 4 miles on it I felt that slight shutter when taking off..... I turned around, went back and had the service manager drive it. He said its normal for these HD trucks and has to do w/ the drive line angle. He said when there is some weight on the rear it will go away, so I took his word for it, and really didnt mind because it was so slight..

I did go underneath to have a look at the hanger bearing, I was surprised that it had some movement, it must be a bearing encased in a rubber bushing. My 04 PSD Superduty 250 was solid, you coulnt move it, it also had more of a clunk then a shutter, and Ford said its normal, when I towed or loaded it, it went away.

Today I was bored and decided to hook up my 7000lb (GTW) dual axle enclosed 8x16 Carmate trailer and see how the truck does, there isnt alot of weight in the trailer now and nothing in the bed until I load it up to go ATVing and or Hunting, so I am not exactly sure what the tongue weight is, but It was kinda light, the rear hardly went down at all. I coulnt get it to do the shutter at all, or at least I didnt feel it.

 

Late reply but thanks for the response I am going to try the U-joints like pourindiesel suggested and I might get a center bearing right away and replace it all.

But no sorry if I was misleading my problem isnt getting worse been the same now for quite awhile (294k on the clock so far ) its just dont wan to rip apart anything and I for sure want to get it done before winter since thats when it seems to get even worse.

My problem isnt during decel what so ever and not really accelerating after rolling either mine is from a dead stop and trying to GET moving and it seems to be MUCH worse in reverse and also I do not have the problem unloaded mine is really only when loading (possibly noticed slightly when unloading taking off faster) but its really just when loaded and well its more so loaded heavy (53' car hauler and 3 cars on) it doesnt even really seem to do it MUCH when I have JUST the trailer on its mainly with trailer and trailer loaded up and reading your post about the ladder bars made sense.

I am still going to do the ujoints cause might as well havent done them ever and theres a FEW miles on em