Driveshaft Coupler
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  • 2 Post By FuzzyLogic
2004-2007 Cadillac CTS-V Performance Mods Discussion, Driveshaft Coupler in Cadillac CTS-V Series Forum - 2004 - 2007; I finally made an account on here so I can ask questions. I have an 05 V and the driveshaft ...
  1. #1
    vOwnR is offline Cadillac Owners Member
    Automobile(s): 05 CTS V
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    Driveshaft Coupler

    I finally made an account on here so I can ask questions. I have an 05 V and the driveshaft coupler needed replaced. I drove it awhile until then I ordered a revshift coupler. I assumed that would solve most of my vibration since my stock coupler was in bad shape. First install of the coupler I did not have washers and did not install the washers which was my fault but the car made noise so I pulled it back on the lift checked it all out and finally drove it and it did not make a 3 mile trip before it tore the three bushings out on the driveshaft side. I got online afterwards to see I missed the washers so I called revshift and they rebuilt it for me. Second round same thing I checked it out put the washers on torqued them all down and half mile down the road I had the same problem. I have read through the articles I could find and no one seems to have a clear answer. Just looking for some help from the wiser.

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  3. #2
    OneFast V is offline Cadillac Owners Enthusiast
    Automobile(s): 2005 Raven Black CTS-V
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    Re: Driveshaft Coupler

    did you take picture of how it was installed? It sounds like something else is off and the coupler failure was obviously a result of that.

  4. #3
    FuzzyLogic is offline Banned
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    Re: Driveshaft Coupler

    Sounds like you have a massive transmission/driveshaft misalignment. Time to get new mounts.

  5. #4
    PISNUOFF Guest

    Re: Driveshaft Coupler

    Or the coupler was defective.

  6. #5
    OneFast V is offline Cadillac Owners Enthusiast
    Automobile(s): 2005 Raven Black CTS-V
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    Re: Driveshaft Coupler

    Quote Originally Posted by PISNUOFF View Post
    Or the coupler was defective.
    I think it is unlikely that both the OEM and revshift couplers were both defective. I find it more likely that something else in the drive line might be also suspect. My OEM coupler looked great at 105k miles when i pulled it out.

  7. #6
    vOwnR is offline Cadillac Owners Member
    Automobile(s): 05 CTS V
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    Re: Driveshaft Coupler

    I took pics before and after. I thought the same at first but after I installed it right and it was tore in a mile I have something not right unless they got a bad batch of bushings. What is the best way to find the misalignment? I have about 105k also

  8. #7
    FuzzyLogic is offline Banned
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    Re: Driveshaft Coupler

    Quote Originally Posted by vOwnR View Post
    I took pics before and after. I thought the same at first but after I installed it right and it was tore in a mile I have something not right unless they got a bad batch of bushings. What is the best way to find the misalignment? I have about 105k also
    They didn't get a bad batch of bushings. At 105k miles, you have bad motor mounts, transmission mount, and differential bushings. The OEM bushings on this car are known to go bad in less than 30k miles.

    If I had to hazard a guess, your transmission mount probably looks like this:



    Installing the Revshift transmission mount block will prevent it from sagging, bringing the output shaft of the transmission into alignment:



    (Photo Credit: Philistine)
    philistine and philistine like this.

  9. #8
    LS6Steve is offline Cadillac Owners Fanatic
    Automobile(s): 2004 CTS-V
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    Re: Driveshaft Coupler

    Your driveshaft carrier bearing could also be so bad that its eating couplers. Yeah at 105k i'd imagine you are overdue for a whoooole bunch of urethane replacements!

  10. #9
    vOwnR is offline Cadillac Owners Member
    Automobile(s): 05 CTS V
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    Re: Driveshaft Coupler

    My carrier bearing is still good and so is my rear bushing on the back of the drive shaft. Trying to upload pic of my
    tranny mount.

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