Another Harmonic Balancer Bad
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2004-2007 Cadillac CTS-V General Discussion Discussion, Another Harmonic Balancer Bad in Cadillac CTS-V Series Forum - 2004 - 2007; Ok bad news bears guys. My harmonic balancer is taking a dump me thinks. It was making a lot of ...
  1. #1
    silentwig's Avatar
    silentwig is offline Cadillac Owners Fanatic
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    Thumbs down Another Harmonic Balancer Bad

    Ok bad news bears guys. My harmonic balancer is taking a dump me thinks.

    It was making a lot of noise for like 100 miles then it silenced down again to a little squeaker. Here is my main concern. According to the maintenance records, the original balancer was replaced at 65k, Im at 90k now and its shot again? Seems kinda bull crap to me especially since I'm virtually stock.

    It shows the wiggling the best starting at 8 sec. I think you need a high speed camera to pick up the vibration well.

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    HAMSTAR is offline Cadillac Owners Enthusiast
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    Re: Another Harmonic Balancer Bad

    Stock units are basically consumables. But that is quite a short lived pulley. Do you rev high often?

    Forum posts show that almost any aftermarket pulley will last longer. If you like to rev high or are modded making serious power or just don't want it to fail again get an ATI Super Damper.

  4. #3
    silentwig's Avatar
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    Re: Another Harmonic Balancer Bad

    Quote Originally Posted by HAMSTAR View Post
    Stock units are basically consumables. But that is quite a short lived pulley. Do you rev high often?
    I bought the car with 87k on it. I dont rev high often and I would be surprised if the person before me did either from the all round condition of the vehicle

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    SevillianSTS is offline Cadillac Owners Enthusiast
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    Re: Another Harmonic Balancer Bad

    If replacing get the ATI I had mine changed through warranty and lots of complaining and they finally changed it, yet the new one still wobbles.

  6. #5
    253ctsv is offline Cadillac Owners Fanatic
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    I think I have this exact same problem, thanks for posting

  7. #6
    rjm27 is offline Cadillac Owners Member
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    Re: Another Harmonic Balancer Bad

    Same problem here, just identified it about a week ago. I've got 91,000 miles and the original balancer. Probably going to replace it with a factory part for $72 versus the $500 ATI super damper. ATI sounds great, but, dayum expensive. Damper replacement party?

  8. #7
    .:stealth:. is offline Cadillac Owners Member
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    Re: Another Harmonic Balancer Bad

    I've had mine replaced at 50K miles, and then replaced again at 58K miles, under warranty.... the stock ones suck.

  9. #8
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    Re: Another Harmonic Balancer Bad

    Dude we all appreciate this,....im squeaking already... Just anit know what it was... Thanks again!

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    .:stealth:. is offline Cadillac Owners Member
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    Re: Another Harmonic Balancer Bad

    Quote Originally Posted by Cadillac_Stokes View Post
    Dude we all appreciate this,....im squeaking already... Just anit know what it was... Thanks again!
    Yeah, the first time I heard mine, i thought it was a bad pulley bearing....

  11. #10
    HAMSTAR is offline Cadillac Owners Enthusiast
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    Re: Another Harmonic Balancer Bad

    Squeaking is more likely a belt failure than a pulley. The pulley tends to manifest as a wobble/rumble.

  12. #11
    SevillianSTS is offline Cadillac Owners Enthusiast
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    Re: Another Harmonic Balancer Bad

    Is this the balancer I'd want if I went ATI ?

    http://www.summitracing.com/parts/ati-918847/applications/year/2007


    $341

  13. #12
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    Re: Another Harmonic Balancer Bad


  14. #13
    bigdogg is offline Cadillac Owners Member
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    I am a bit confused...how do you guys determine that these balancing pulleys are shot. I bought my '06 with 37k miles on it and it was wobbling then. I asked a racing buddy of mine who runs GM engines, he said totally normal. He then manually upped the rpm while we watched the pulley smooth right out at higher rpm. So, now I am up to 60k miles and never touched it. What is making you guys change these things??

  15. #14
    HAMSTAR is offline Cadillac Owners Enthusiast
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    Re: Another Harmonic Balancer Bad

    For me it was a sudden change in the wobbliness. It always had a wobble, but one day the rubber layer oozed out and it started really dancing.

  16. #15
    bigdogg is offline Cadillac Owners Member
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    I guess I never saw a new one to compare mine to, I've got no baseline. You guys have me worried that if I let it go too long, it will eventually fly apart....that wouldn't be good!
    If anyone knows a measurement I could take to tell me it's out of spec, I'd be most appreciative.

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