Vibration - too lazy for FAQ
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2004-2007 Cadillac CTS-V General Discussion Discussion, Vibration - too lazy for FAQ in Cadillac CTS-V Series Forum - 2004 - 2007; Sorry - the title says it all. I have a vibration that started recently. Begins (in every gear) about 2200 ...
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    DRKSIDE's Avatar
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    Vibration - too lazy for FAQ

    Sorry - the title says it all.

    I have a vibration that started recently. Begins (in every gear) about 2200 RPM's and gets strong at 2500 RPM's. Goes away by 3000 RPM's. I can feel it in the pedals, the steering wheel and the shifter. Not so much in the seat. It isn't a violent vibration but it is very noticeable. Not so much to the passenger (unless I say "do you feel that?") but is very, VERY noticeable to the driver.

    Any ideas?

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    deedubb's Avatar
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    Re: Vibration - too lazy for FAQ

    I have an answer, but I'm too lazy to post it.

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    Re: Vibration - too lazy for FAQ

    Do you have the dual mass flywheel? Ewill told me that that vibration (around 2300rpm) is an inherent problem with the LS7 clutch kit, so it could have something to do with that.

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    Re: Vibration - too lazy for FAQ

    Quote Originally Posted by deedubb View Post
    I have an answer, but I'm too lazy to post it.
    I just choked on my drink.
    That was F'n funny!

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    maxspeed96ct is offline Cadillac Owners Connoisseur
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    Re: Vibration - too lazy for FAQ

    does the car have polly motor mounts or trans mount?

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    Re: Vibration - too lazy for FAQ

    Could it also possibly be bad MMs?
    '05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels or OEM wheels w/'06-'07 Center Caps, plus a couple more. 472 RWHP/411 RWTQ (Mustang Dyno).

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    ewill3rd is offline Cadillac Technician
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    Re: Vibration - too lazy for FAQ

    Yeah we need tons more information.

    Does it do this in any gear at a certain rpm or only on the highway in that rpm band?
    Can you duplicate it sitting still?

    As stated the LS7 setup seems to come with a pretty good vibration in the pedal in that rpm range.

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    Stepside is online now Cadillac Owners Enthusiast
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    Re: Vibration - too lazy for FAQ

    Quote Originally Posted by rand49er View Post
    Could it also possibly be bad MMs?
    PLAIN OR PEANUT

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    Re: Vibration - too lazy for FAQ

    Lots of WIN in this thread

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    Re: Vibration - too lazy for FAQ


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    your maker is offline Cadillac Owners Fanatic
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    Re: Vibration - too lazy for FAQ

    i have the same vibration but it occurred right after i replaced the motor mounts with a creative steel set. i am next going to be doing a ls7 clutch kit replacement. i do believe that the aftermarket MM's are to hard in rockwell and transmit a bad vibration.

    you can also duplicate this vibration sitting still, also i hear the exhaust a lot more. i am not sure what it might be

    anyone have any good idea's

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    Re: Vibration - too lazy for FAQ

    Quote Originally Posted by deedubb View Post
    I have an answer, but I'm too lazy to post it.
    Nice! You made Coke come out my nose!

    I said that just because I thought it might get more views. Honestly, I didn't really know what to search. "Vibration" returns a whole hell of a lot of threads on these cars if you know what I mean.

    Quote Originally Posted by maxspeed96ct View Post
    does the car have polly motor mounts or trans mount?
    Car has stock motor mounts and transmission mounts. New transmission and mount (3 months ago) new rear end (also 3 months ago), both also GM OEM parts and labor.

    Quote Originally Posted by ewill3rd View Post
    Yeah we need tons more information.

    Does it do this in any gear at a certain rpm or only on the highway in that rpm band?
    Can you duplicate it sitting still?

    As stated the LS7 setup seems to come with a pretty good vibration in the pedal in that rpm range.
    Vibration isn't speed related. It does it sitting still, in neutral, in any gear, cold or hot, clutch engaged and disengaged and only in the RPM range 2300-3000. After and before that range everything is smooth. I don't notice if it is present under WOT because it goes through that range pretty quickly but it is most noticeable at 2500 RPM's. I didn't do any unusual driving or anything before I noticed it. Don't really know when it started. I just noticed one day that the interstate I was cruising down was smooth and my ride wasn't. Like I said before, I feel it through the steering wheel, pedals and shifter.

    Quote Originally Posted by SkullV View Post
    Do you have the dual mass flywheel? Ewill told me that that vibration (around 2300rpm) is an inherent problem with the LS7 clutch kit, so it could have something to do with that.
    Original flywheel. Had the clutch replaced under warranty 30,000 miles ago.


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    Re: Vibration - too lazy for FAQ

    The more poly you add to the mounts/driveline the more vibration you are going to get. None of it really bothered my until I got the LS7 clutch kit in, but I think there is something wrong with my engine so it's going to the dealer tomorrow after I get a chance to datalog it first.

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    Re: Vibration - too lazy for FAQ

    No poly here. Just junky rubber.

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    maxspeed96ct is offline Cadillac Owners Connoisseur
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    Re: Vibration - too lazy for FAQ

    Quote Originally Posted by SkullV View Post
    The more poly you add to the mounts/driveline the more vibration you are going to get. None of it really bothered my until I got the LS7 clutch kit in, but I think there is something wrong with my engine so it's going to the dealer tomorrow after I get a chance to datalog it first.
    do you mean vibration related or something major is wrong?

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