New driveshaft and flex disks still vibrations???
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, New driveshaft and flex disks still vibrations??? in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; OK I had the dealer replace my drive shaft, flex disks and tranny mount and fix a leak on the ...
  1. #1
    hrpatel17926 is offline Cadillac Owners Fanatic
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    New driveshaft and flex disks still vibrations???

    OK I had the dealer replace my drive shaft, flex disks and tranny mount and fix a leak on the main trans shaft seal. 07-3.6, 58k.

    So everything is in and feels very tight and much better than before. However.. I get this strange vibration between 45-55. Almost like when you drive over the side rumble marks on the road but not as aggressive.

    Dealer says the rims and tires may be the issue. I said it did not happen before so why now. No comments really because they are not sure how to fix it.

    I told him well I will put the OE rims back on he had a big surprised look because he did not think I had them. I asked if it still does it with those which I know it will what then? They say we will take the drive shaft out again and send it back to the driveshaft shop and have them rebalance?

    Any suggestions on how to trouble shoot?

    Thank you,

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    DopeEffect's Avatar
    DopeEffect is online now Cadillac Owners Fanatic
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    Re: New driveshaft and flex disks still vibrations???

    I could see the tires possibly being an issue. The driveshaft can hog a lot of the vibrations caused by other components. When was the last time you had the alignment done? That range normally means tire pressure/alignment issue. High speeds are normally more serious.

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    hrpatel17926 is offline Cadillac Owners Fanatic
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    Hello, I have new tires less than 3k and OE 18" rims, alignment was done at that time. I had them road force the tires right after the work because I thought the same thing.

    The rumble/ vibration does not feel like tires though. The car drives smooth no shimmy in steering. Its like the sub woofer is on low bass and shakes everything.

    Plus this vibration was not there before. So after I put the other 16" wheels back on it will be interesting if it happens with them.

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    CSTech's Avatar
    CSTech is offline Cadillac Owners Member
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    Re: New driveshaft and flex disks still vibrations???

    May want to see if your differential bushing is bad. Usually if you drivetrain is bad, you want to change: Transmission mount, front coupler, carrier bearing(or driveline in your case), rear coupler, and then differential bushing.
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    hrpatel17926 is offline Cadillac Owners Fanatic
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    Well new rear diff last year 20k miles ago all new flex disks, tranny mount and new center bearing with the nee drive shaft. I think everything drive line related has been changed.

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    Re: New driveshaft and flex disks still vibrations???

    Okay, next thing I would check as it has happened to multiple people is the bolts. I have seen and heard people have different length, different diameter, and some bolts missing a washer. With the RPM, having a bolt with no washer when the others do may be causing your vibrations.
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    Thyine is offline Cadillac Owners Member
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    Re: New driveshaft and flex disks still vibrations???

    its a drive shaft alignment issue... take it straight to the drive shaft shop and bypass the dealer, all new parts does not mean its aligned properly, you most likely have it sagging in the front/ trans mount. drive shaft shops are specialists and thats why the dealer is sending your parts out to them.

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    hrpatel17926 is offline Cadillac Owners Fanatic
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    Ok thank you all, i plan to go back this week with my 16 inch tires and see whats up. I thought by someone else doing the work would save me the aggravation but it caused the same or more. Should have tackled it myself as i have done on other neuonces of the car.

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    Teedoe's Avatar
    Teedoe is offline Cadillac Owners Fanatic
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    I had the same issue. A high speed balance did the job for me

  11. #10
    hrpatel17926 is offline Cadillac Owners Fanatic
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    Teedo,

    High. Speed balance on wheels or drive shaft.

  12. #11
    caddyshack33 is offline Cadillac Owners Fanatic
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    As someone whp chased down vibration issues thinking they were driveshaft/trans mount related for almost two years, I cannot emphasize how important it is to rule out wheel/tire balance issues. It took the right mechanic who gave a damn to balance them properly, solving all issues. This was after flex disc replacement. Make sure your rims and tires are fine before going down this road. Very few people have the skills to properly diagnose these problems and the CTS seems particularly prone to vibration problems.

  13. #12
    hrpatel17926 is offline Cadillac Owners Fanatic
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    Much appreciated I hear what you are saying, I put the 16 inch wheels on and as I suspected there is a rumbling/vibration in the steering wheel and pedals and seat between 49-59mph its not a shaking or a wooble. So I am certain its the drive shaft work they have done needs adjustment.

    Thank you

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