Help with troubleshooting this noise...
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Cadillac Escalade, EXT and ESV Forum - 1999 - 2006 Discussion, Help with troubleshooting this noise... in Cadillac Escalade Forums; 2004 Escalade, 150K miles So, about a week or so ago I began hearing this humming/whrrrring noise coming somewhere from ...
  1. #1
    atlrus is offline Cadillac Owners Fanatic
    Automobile(s): 04 escalade, 07 STS4 V8
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    Unhappy Help with troubleshooting this noise...

    2004 Escalade, 150K miles

    So, about a week or so ago I began hearing this humming/whrrrring noise coming somewhere from the front of the Lade (differential, axle, brakes?)

    The problem is - the noise is audible only when you are almost to a complete stop (around 10-15mph) until you come to a full stop and only after the truck has been over 40mph.

    In other words, if you speed up to let's say 30mph and then slow down - no noise. There is no noise while driving, either.

    Took it to my mechanic and replaced the transfer case, since he said it was to the point of me having no AWD, the t-case was that bad. That unfortunately solved nothing. Changed the diff fluids, no help.

    I figured I ask here, maybe someone had this problem in the past and knows exactly what may be causing it. I really hope I don't end up replacing the front diff only to still have this noise...

    Thanks

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  3. #2
    the cadillac man's Avatar
    the cadillac man is offline Cadillac Owners Master
    Automobile(s): 03 cadillac escalade
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    Quote Originally Posted by atlrus
    2004 Escalade, 150K miles

    So, about a week or so ago I began hearing this humming/whrrrring noise coming somewhere from the front of the Lade (differential, axle, brakes?)

    The problem is - the noise is audible only when you are almost to a complete stop (around 10-15mph) until you come to a full stop and only after the truck has been over 40mph.

    In other words, if you speed up to let's say 30mph and then slow down - no noise. There is no noise while driving, either.

    Took it to my mechanic and replaced the transfer case, since he said it was to the point of me having no AWD, the t-case was that bad. That unfortunately solved nothing. Changed the diff fluids, no help.

    I figured I ask here, maybe someone had this problem in the past and knows exactly what may be causing it. I really hope I don't end up replacing the front diff only to still have this noise...

    Thanks
    Sounds like a wheel bearing

  4. #3
    jjtwomey's Avatar
    jjtwomey is offline Cadillac Owners Member
    Automobile(s): 2002 Escalade 500XS
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    Massachusetts
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    58
    From what I hear the need to replace a wheel bearing is very common after the 100 150k mile mark

  5. #4
    atlrus is offline Cadillac Owners Fanatic
    Automobile(s): 04 escalade, 07 STS4 V8
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    100

    Re: Help with troubleshooting this noise...

    Wouldn't a noise from a wheel bearing be louder at higher speeds? In my case the noise is non-existent until you start slowing down and it starts at about 15mph and slower.

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