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Thread: clunking rattling noise from the rear

  1. #1
    jwanes is offline Cadillac Owners Member
    Automobile(s): 2003 Cadillac STS
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    clunking rattling noise from the rear

    I have an 2003 STS and for the last 6 months I have been hearing this rattling/clunking noise coming from the rear right side of the car. I have checked the trunk and the door to locate the noise and everything was fine. Took it to the shop and had suspension and exhaust components checked and everything was tight. has anyone had this problem with their car? It has been driving me crazy for the last 6 months.

    Thanks.


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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: clunking rattling noise from the rear

    Is this noise bump related? A clunk could be a loose shock mount, but the shop should have checked that. Control arm bushing?

  4. #3
    jwanes is offline Cadillac Owners Member
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    Re: clunking rattling noise from the rear

    Quote Originally Posted by Ranger View Post
    Is this noise bump related? A clunk could be a loose shock mount, but the shop should have checked that. Control arm bushing?
    Ranger yes when going over bumps. It is very loud when going over big bumps to the point of feeling like the car is about to fall apart. I would have thought a shock mount as well. There is no noticeable change in the ride. I guess I need to take it back and have it checked again.

  5. #4
    stoveguyy is offline Cadillac Owners Connoisseur
    Automobile(s): 03 STS
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    Re: clunking rattling noise from the rear

    do 03 cars suffer from loose knuckle bushings like the 96-97 vintage? or is that an old car issue? i wish i had an 03 car to complain about

  6. #5
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: clunking rattling noise from the rear

    Never had any problems with mine.

  7. #6
    jwanes is offline Cadillac Owners Member
    Automobile(s): 2003 Cadillac STS
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    Re: clunking rattling noise from the rear

    PROBLEM SOLVED! It was the bolt that attaches the body to the chassis at the right rear that was loose.

  8. #7
    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    there is no separate chassis, these are unibody cars.

  9. #8
    mikejoyce34's Avatar
    mikejoyce34 is offline Cadillac Owners Fanatic
    Automobile(s): 2000 STS, 2004 STS, 2006 STS AWD
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    Re: clunking rattling noise from the rear

    i trhink he means the rear sub frame mounts, i have this same problem and am going to check these bolts tonight


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