2020 Telluride AWD rear end jerking thumping and vibrating

[ucinn]

Driveshaft would make it go away with a gear change and it doesn't, so probably not the driveshaft... Wheel bearing, CV joint, long shot would be a rotor. Tire or wheel.

 

[Mr.JB]

Three questions, please:

1) What magic words do we say to the service department to have them look into this - just "CV Joints hitting harmonic distortion?"
2) What kind of tests do they do to verify the problem?
3) What do they do to fix the problem?

CV Joints are the connection points (rods and joints) that go between the transmission and the front wheels. Many many front wheel driven cars have CV joints and when they tend to go bad, most people complain of a vibration. I'm not saying that they are going bad in the new telluride, but they are not balanced thus causing the vibration. I've seen it and felt it before, so that is my first suggestion.
While not my profession, I do wrench on cars a lot.

 

[mrmac]

CV Joints are the connection points (rods and joints) that go between the transmission and the front wheels. Many many front wheel driven cars have CV joints and when they tend to go bad, most people complain of a vibration. I'm not saying that they are going bad in the new telluride, but they are not balanced thus causing the vibration. I've seen it and felt it before, so that is my first suggestion.
While not my profession, I do wrench on cars a lot.

I doubt the vibration would only be noticeable in this small speed range.

 

[Albert Ruiz]

So... called before leaving work to see if they were able to find the issue. I was told the Tec took it for a drive and didn’t hear or feel anything wrong.
I went to the dealer and took the Tec for a ride, and exactly at 70mph you can hear and feel the vibration. He definitely was able to hear it. Also pointed out that below 65 and above 75, nothing. So they are putting me In a rental so they can try to figure out what’s causing it. I will keep you all updated as soon as I know anything.

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[Buckeye-TRide]

CV Joints are the connection points (rods and joints) that go between the transmission and the front wheels. Many many front wheel driven cars have CV joints and when they tend to go bad, most people complain of a vibration. I'm not saying that they are going bad in the new telluride, but they are not balanced thus causing the vibration. I've seen it and felt it before, so that is my first suggestion.
While not my profession, I do wrench on cars a lot.

Wouldn’t this also include FWD vehicles? Seems to be AWD only so far...

 

[Mr.JB]

Wouldn’t this also include FWD vehicles? Seems to be AWD only so far...

Maybe - Maybe Not.
While the transmission is the same for both, the AWD has a transfer case and the FWD does not. So the parts for the CV Joints are likely different between the AWD and the FWD to accommodate the addition of the transfer case.

 

[Albert Ruiz]

Maybe - Maybe Not.
While the transmission is the same for both, the AWD has a transfer case and the FWD does not. So the parts for the CV Joints are likely different between the AWD and the FWD to accommodate the addition of the transfer case.

Wouldn’t this also include FWD vehicles? Seems to be AWD only so far...

A lot more moving parts. Transfer case, drive shafts, rear differential and CV joints

 

[Mr.JB]

A lot more moving parts. Transfer case, drive shafts, rear differential and CV joints

Question for you Albert,
You mentioned earlier that you felt this in comfort mode. Have you felt it in other modes? The reason for the ask is that the settings transfer more of the drive to the rear wheels than other settings. I was wondering if it was transferring power to the rear wheels and as such, putting the drive shaft under load.

(I would try this myself, but our black copper is in the body shop - see the give me strength thread)

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[mrmac]

I guess the experts will figure it out.

On a positive note, we picked up our SKP this afternoon. Not a single hint of vibration at any speed, including 22 miles of hwy between 65-74 mph. Smoother than glass.

 

[Albert Ruiz]

Question for you Albert,
You mentioned earlier that you felt this in comfort mode. Have you felt it in other modes? The reason for the ask is that the settings transfer more of the drive to the rear wheels than other settings. I was wondering if it was transferring power to the rear wheels and as such, putting the drive shaft under load.

(I would try this myself, but our black copper is in the body shop - see the give me strength thread)

No. I haven’t tried it in other modes. I’m hoping when I get it back the issue would have been resolved. But if not... I guess I’ll give that a try.

 

[CincyTech]

No. I haven’t tried it in other modes. I’m hoping when I get it back the issue would have been resolved. But if not... I guess I’ll give that a try.

Well, I am watching for Albert Ruiz to let us know his service department has found the problem. My own second try is Monday, July 1st. My first try resulted in having wheels balanced (failed) and then getting a service manager to ride along to actually feel and hear the problem. As a big shot in the dark, I removed my 4 splash guards, just in case wind catching them might cause a vibration. No luck - the problem is still there.

 

[Albert Ruiz]

Sorry...No news yet.

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[G-799031]

Just got my EX AWD, seeing the same issue. Looks like AWD issue

 

[andytelluride]

69-75 mph range

 

[andytelluride]

Picked up mine today EX AWD. Having the same humming vibration issue at high speed around 65-70. Suspecting AWD issue. Disappointed

 

[alexdrums]

it sounds like CV Joints hitting harmonic distortion.

Or sympathetic vibration

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[Wap52]

I got my AWD and I don't seek to feel it. will get on a highway that is a little smoother and see if I can feel it.

 

[Tim-in-CA]

I got my AWD and I don't seek to feel it. will get on a highway that is a little smoother and see if I can feel it.

I tried to replicate on my SXP AWD and couldn't … but the roads here in So Cal are not the best so its hard to repro. I'll have to find a smooth road to see if I can replicate. Hopefully for those that are experiencing the issue, there will be a root cause found and speedy remedy.

 

[telluride-jon]

I had my SXP AWD on the highway for the first time on Wednesday. Spent a couple hours varying between 65-75 and I did not detect any vibration.
Good luck nailing it down, seems to not be a universal problem with the AWD.

 

[G-733156]

I had similar vibration....had the tire force balanced. took some of the vibration out but need to bring back as still feeling the oscillating/vibration. Dealer tried to tell me that is just the way the car is, don't believe them so more investigation needed. Guess I'm not the only one.