Wheel bearing?
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Cadillac SRX First Generation Forum - 2004 - 2009 Discussion, Wheel bearing? in Cadillac SRX Forums; From those that have replaced a rear wheel bearing, can you enlighten me on the sound that is typically heard? ...
  1. #1
    JayTF1 is offline Cadillac Owners Fanatic
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    Wheel bearing?

    From those that have replaced a rear wheel bearing, can you enlighten me on the sound that is typically heard?

    I've got a hum that starts around 45-50km/h and gets more audible as speed increases. I can't tell if its driver or passenger side. Could I 'load' or steer to one side in an attempt to make the noise louder etc?

    I understand that I could potentially raise the vehicle and twist the wheel at 3/9 & 12/6, but I'm trying to diagnose while driving.

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    MoistCabbage's Avatar
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    Bad bearings typically "growl". I guess you could describe it as a low pitched hum, but it's close to the sound of driving over very tough asphalt.

    You can load and unload the bearings by making sweeping S turns, like a race car driver warming his tires. If you hear the noise while turning right, it's the left bearing, and vice versa.

    FWIW, play in the wheel at 3/6 is a bad theme rod end, 6/12 is a bad ball joint. A bad bearing will also cause play at 6/12, but it would be a very small amount of movement. It would feel more like a click than a clunk, if that makes sense.

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    conedoctor is online now Cadillac Owners Connoisseur
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    Re: Wheel bearing?

    Maybe the car does not know the words so it hums?


    Yes you can turn one way and listen for the sound to change, in all honesty for the price change both and call it done as they are the same age.

    You can also pull on the wheel with the car parked on the ground just pull on the top of the wheel and get the car rocking a bit and feel for a clunk and listen, the 3-9 way works as well but just need a bit more yank.

    Race car drivers are cleaning the tires not warming them, not picking a fight just saying so please don't flame me.

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    Re: Wheel bearing?

    After a drive, carefully feel the hub. Bad bearing will cause a very hot hub. Just reach between the wheel spokes, you can feel the difference between the rotor edge and the hub of the rotor.
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    conedoctor is online now Cadillac Owners Connoisseur
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    Re: Wheel bearing?

    That's good thinking, I always check the trailers hubs after a trip.

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    JayTF1 is offline Cadillac Owners Fanatic
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    Re: Wheel bearing?

    Thanks for the tips.

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    Re: Wheel bearing?

    If that doesn't work, get a microphone and tape it near the wheel and see where the noise is coming from.

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    JayTF1 is offline Cadillac Owners Fanatic
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    Re: Wheel bearing?

    Dealer is installing new rear driver side wheel bearing. (among other fixes)

    When driving on the road, I tried 'loading' the car to one side, then the other. It would change noise in both directions which didn't help with diagnosis.

    They eventually did similar to what 08SRX mentioned. It was raised on the hoist and driven by one tech. while someone else listened to the rear end of the car.

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