: Drone getting louder with speed.



Stoneybroke
06-12-13, 09:38 PM
I drive a 2010 AWD 3.6 wagon. Today, I noticed a drone that seemed to originate in the rear of the car. First thought it was tire noise, but got onto some new, perfectly smooth pavement and the noise was still
there. It was quite obvious at 55mph and almost a howl at 75. No vibration and ride and steering seemed normal. Ideas?

Jschmank
06-12-13, 11:32 PM
wheel bearing possibly.

tinman
06-13-13, 08:01 AM
How old are your tires? They can sometimes cause the loud drone as they wear down. Depends on the tread pattern. While I don't believe this is the cause it is a consideration. Wheel bearing issue first, differential second, driveshaft or u-joint, pavement.

sdobert
06-13-13, 08:47 AM
I had this same issue a few months back on the right rear and took it into the dealer. They found that it was a wheel bearing. They replaced the entire hub and fixes the problem.

Stoneybroke
06-13-13, 10:21 AM
37K on the tires. Time to call my dealer. Thankfully, car is certified.

tinman
06-13-13, 10:52 AM
If you have the OEM tires I doubt that is the problem. I had some PS2's that got worn down and THEY WERE LOUD.

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I drive a 2010 AWD 3.6 wagon. Today, I noticed a drone that seemed to originate in the rear of the car...

The good thing is the President is also trying to get rid of Drones on a daily basis, so maybe between the two of you it can get figured out. :banghead:

C "T" ess
06-13-13, 11:14 AM
It has all the classic signs of a wheel bearing especially since you are not getting ride feedback.
By the way I bet you are glad to be up there. It's been in the 90's everyday with a heat index above 100. Combined with heavy rain every afternoon. Say hi and I hope you get your problem resolved with no problems.

tinman
06-13-13, 11:31 AM
Humidity? What humidity? We don't have no stinking humidity!

Cadillac Cust Svc
06-13-13, 11:32 AM
I drive a 2010 AWD 3.6 wagon. Today, I noticed a drone that seemed to originate in the rear of the car. First thought it was tire noise, but got onto some new, perfectly smooth pavement and the noise was still
there. It was quite obvious at 55mph and almost a howl at 75. No vibration and ride and steering seemed normal. Ideas?

Hello Stoneybroke,

I see you are looking to contact your dealership in regards of this issue you are experiencing. If you would like me to stay involved throughout the process, please let me know. I can be reached via private message. Keep me informed with the outcome of your situation and if it is able to be fixed.

Sincerely,

Laura M.
Cadillac Customer Service

hauler
06-13-13, 08:28 PM
I drive a 2010 AWD 3.6 wagon. Today, I noticed a drone that seemed to originate in the rear of the car. It was quite obvious at 55mph and almost a howl at 75. No vibration and ride and steering seemed normal. Ideas?
I had a Tbird that did that. The dealer even took the dif apart looking for it. The factory rep found it, a badly mounted exhaust shield hanging in the undercar airstream.

Stoneybroke
06-17-13, 10:40 PM
Dealer replaced the right rear hub/bearing assembly today under warranty. All is well. First real mechanical problem I've had.

typo681
06-28-13, 10:47 PM
I had the same problem with my CTS a few weeks ago. Drone/Hum from right rear wheel from 40-80mph. No vibration. Took it in and it was also the wheel bearing (covered under my GM Protection Plan).

Cadillac Cust Svc
07-01-13, 10:48 AM
Dealer replaced the right rear hub/bearing assembly today under warranty. All is well. First real mechanical problem I've had.

Hi Stoneybroke,

Glad to hear the dealer was able to replace the part and solve your issue. If there are any other issues or problems that arise, don't hesitate to reach out to us.

Regards,

Laura M.
Cadillac Customer Service

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I had the same problem with my CTS a few weeks ago. Drone/Hum from right rear wheel from 40-80mph. No vibration. Took it in and it was also the wheel bearing (covered under my GM Protection Plan).

Hello typo681,

I am happy to hear you were able to get your vehicle issue diagnosed and fixed by the dealership. Don't hesitate to contact us in the near future if any other problems or concerns come up.

Sincerely,

Laura M.
Cadillac Customer Service

like2drive
10-05-13, 09:24 PM
I will need new tires soon. I'm still running the OEM Michelin Pilot 17" since new. Almost 60,000 miles.
Last week, I noticed that I hear a drone coming from the rear end of the car, more noticeable at higher speed. Based on this thread and few others, it could be a wheel bearing, the drive shaft...? I might also be suspecting a tire, since I have about 4 or 5/32 thread left. Do tires become louder as they wear? I would think yes, but just want your opinions guys!

Anyway, I might have this checked sometime next week, as if it is a bearing or drive shaft, the powertrain warranty should cover it, right?

tinman
10-05-13, 09:38 PM
I had a set of PS2's. When they wore down they were the loudest tires I ever owned.

Danmc
10-06-13, 08:23 AM
I see this is an older post but if anyone can help it would be great! My 2010 CTSV has the same issue. The car was brought in and I was told it was a right rear wheel bearing. After the replacement the noise is still there. Originally,I thought the noise was coming from the drivers side but who am I to tell a professional their job I guess. Anyway,I was told that parts would have to be changed one by one to solve the issue. Should I just have the other bearing replaced and hope for the best?

like2drive
10-06-13, 12:09 PM
I certainly would have the other bearing replaced. If it's not that, at least you would have gotten two new bearings!

Cadillac Cust Svc
10-07-13, 02:54 PM
I see this is an older post but if anyone can help it would be great! My 2010 CTSV has the same issue. The car was brought in and I was told it was a right rear wheel bearing. After the replacement the noise is still there. Originally,I thought the noise was coming from the drivers side but who am I to tell a professional their job I guess. Anyway,I was told that parts would have to be changed one by one to solve the issue. Should I just have the other bearing replaced and hope for the best?

Hello Danmc,

I am sorry you are experiencing a noise issue. I understand your hesitation to have the other bearing replaced if it doesn't solve the issue. However, if this is something the dealer recommended, I would have this performed. If you would like to further discuss your situation with Gregory or I, please contact us via private message. We can also help with any additional concerns or questions.

Sincerely,

Laura M.
Cadillac Customer Care

like2drive
10-10-13, 09:48 AM
I will need new tires soon. I'm still running the OEM Michelin Pilot 17" since new. Almost 60,000 miles.
Last week, I noticed that I hear a drone coming from the rear end of the car, more noticeable at higher speed. Based on this thread and few others, it could be a wheel bearing, the drive shaft...? I might also be suspecting a tire, since I have about 4 or 5/32 thread left. Do tires become louder as they wear? I would think yes, but just want your opinions guys!

Anyway, I might have this checked sometime next week, as if it is a bearing or drive shaft, the powertrain warranty should cover it, right?

Had the rear groan noise checked by my dealer yesterday. They found out that it was the right rear bearing. They replaced it right away and it was covered under the powertrain warranty. This is the second bearing replaced on my car. So far, the front right and rear right bearings have been replaced. Is this a common problem on the 2nd gen CTS?

tinman
10-10-13, 10:10 AM
Only if you continue to take left hand sweepers at high speed, Mr. Vettel.

Twentybucks
10-10-13, 04:00 PM
Yes, there is a service bulletin out on wheel bearing assemblies having an incorrect bearing installed during manufacturing. Also drive shafts can be a problem. I had a vibration/drone/hum problem on my 2010 CTS4 and they wound up replacing the rear driveshaft and a seal. New rear driveshaft no more problems.

DarienA
10-20-13, 03:55 PM
Mostly lurk around these parts. I Purchased a 2010 CTS in June that I'm absolutely in love with. Short time afterwards I noticed this droning sound rising and falling with wheel speed in the rear. Searching in the forums found the wheel bearing mentions. Took the car in to have it looked at last week. Drivers side wheel bearing replaced. All good back to being silent.

tinman
10-20-13, 05:06 PM
Silence is golden.

Cadillac Cust Svc
10-21-13, 03:37 PM
Mostly lurk around these parts. I Purchased a 2010 CTS in June that I'm absolutely in love with. Short time afterwards I noticed this droning sound rising and falling with wheel speed in the rear. Searching in the forums found the wheel bearing mentions. Took the car in to have it looked at last week. Drivers side wheel bearing replaced. All good back to being silent.

Hello DarienA,

Thank you for providing this information. I apologize you experienced a droning sound with your vehicle. I am glad you were able to bring your vehicle in and they replaced the drivers side wheel bearing which fixed your issue. If additional concerns or questions arise, please contact us via private message so we can assist. Continue to enjoy your CTS!

Sincerely,

Laura M.
Cadillac Customer Care