Dash squeaks and driver's B-pillar rattle
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  • 1 Post By Guy.Seminerio
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  • 1 Post By carter's_sts
Cadillac STS Forum - 2005 through 2012 Discussion, Dash squeaks and driver's B-pillar rattle in Past Cadillac Vehicle Discussion; I've looked for months, I can't find the INCREDIBLY irritating twin squeaks coming from the dash. Both sound identical, but ...
  1. #1
    mckellyb is offline Cadillac Owners Enthusiast
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    Dash squeaks and driver's B-pillar rattle

    I've looked for months, I can't find the INCREDIBLY irritating twin squeaks coming from the dash. Both sound identical, but one is from the far right windshield corner, the other seems to emanate from in front of the instrument cluster. I've pushed, moved, banged...nothing makes it change, save for temperature, and I think the occasional jarring from the great infrastructure we now have in the US.

    FWIW, they never occur simultaneously. The driver's side one is warmer weather related, and while the passenger's side one used to be only when it was below about 40F, now it's at any temp.

    The other, which may be worse, is a rattle I swear is coming from part of the seat belt height adjustment, but again, nothing makes it change.

    There isn't anything in the car but me. I have no kids, my wife rarely rides in it, and I don't keep anything in it, as it's my commuter.

    Anyone ever find something which could cause this? I'd take stuff apart, but experience tells me I'll just create more noises.

    Thanks!

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  3. #2
    Guy.Seminerio is offline Cadillac Owners Connoisseur
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    Re: Dash squeaks and driver's B-pillar rattle

    Have you looked at the plastic piece that runs the width of the car at the base of the windshield?

    Are you sure your rattles aren't coming from the door panel?
    mckellyb likes this.

  4. #3
    ddalder's Avatar
    ddalder is offline Cadillac Owners Connoisseur
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    Re: Dash squeaks and driver's B-pillar rattle

    Under what circumstances does the rattle seem to occur in the 'B' pillar (turns, bumps, opening the rear door all the way)? I had problems with all four of my door strikes loosening that caused a knocking like noise over bumps. These did not come loose from the car, it was the post that engaged with the latch that loosened slightly from the base. There was also so service bulletin for some vehicles regarding a seat belt guide with bolts installed that were too long causing a creaking noise. As for the dash, there was another bulletin regarding felt tape being applied to the trim around the instrument cluster to prevent noise. Each of these bulletins only applied to some vehicles so I'm not sure if they apply specifically to your car. You can try removing the defrost vent panel for a short time to see if the dash squeak disappears.
    Ludacrisvp and mckellyb like this.

  5. #4
    mckellyb is offline Cadillac Owners Enthusiast
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    Re: Dash squeaks and driver's B-pillar rattle

    I've checked that full-width plastic piece in front of the dash. Unfortunately, that's not it. I may pull that panel, just to see if it stops.

    The door latches/cards. Hmmmm. Hadn't thought about those! Thanks!!! I'll go check the posts RIGHT NOW, even though it's 109F in the garage.

    The B-pillar/door rattle is pretty much all the time, at speeds above 30 MPH. There aren't roads smooth enough to allow it to stop, though the new tollway is close.




    ...it's a conspiracy...

    edit: ddadler, I may owe you a few Molsons, eh! The top latch Torx, looks like a T20, but I didn't check...lucky knack that way...was at least a turn and a half loose. Maybe two full turns!

    The door frame latches, both front and rear, are seriously tight, but that one top door latch, driver's door, it was very definitely loose. Loose enough I thought maybe it was stripped when I started tightening it.

  6. #5
    Ludacrisvp's Avatar
    Ludacrisvp is offline Cadillac Owners Connoisseur
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    Re: Dash squeaks and driver's B-pillar rattle

    Did you grab the center post of the door latch and give it a good wiggle to see if it moves?

  7. #6
    mckellyb is offline Cadillac Owners Enthusiast
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    Re: Dash squeaks and driver's B-pillar rattle

    I did.

    Took a large open-end wrench and not abusively tried to move it.

    Rock solid.

    No noise from it this morning, but all noises are worse in the afternoon. I don't know if it's because I'm more aware of them, of if it's from the car getting warm in the sun.

    Though...the garage was 96F this morning, so...

  8. #7
    carter's_sts is offline Cadillac Owners Connoisseur
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    Re: Dash squeaks and driver's B-pillar rattle

    I had a stupid noise from the very front right side of the dash. Intermittent and made me crazy.

    Had my wife drive (broke the rule) while I pushed on things. I found if I pushed on the windshield down there it stopped.

    Ended up being a piece of what looked like solder under some rubber trim on the outside of the windshield.

    From the sound of it I would have sworn it was inside the car.
    mckellyb likes this.

  9. #8
    ddalder's Avatar
    ddalder is offline Cadillac Owners Connoisseur
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    Re: Dash squeaks and driver's B-pillar rattle

    Regarding the door strikes, when I grabbed mine firmly between my fingers and wiggled it I only got a little bit of a light click sound. It was amazing how much that was amplified and then radiated when engaged to the latch mechanism. Until I replaced them I never would have thought that was the cause of my rather noticeable clunk.

  10. #9
    Ludacrisvp's Avatar
    Ludacrisvp is offline Cadillac Owners Connoisseur
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    Re: Dash squeaks and driver's B-pillar rattle

    Yeah any time the door flexed it would pop / click mine.

  11. #10
    mckellyb is offline Cadillac Owners Enthusiast
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    Re: Dash squeaks and driver's B-pillar rattle

    Welp, the rattle returned on my way home, yesterday.

    It's defnitely in the seat belt height adjuster, but no amount of messing with/pushing on stuff changes it.

    If I move my head down 2-3 inches below it, can't hear it. Naturally, it's RIGHT AT ear level.

    /facepalm

    carter'sSTS, windscreen rubbing, eh? I can see this. I've had it happen in other vehicles, decades ago, so I'll give it a try.

    I kinda want a new windscreen, anyway. Mine has two rock chips and some pitting from road debris. I've been holding off putting 3M Crystalline tint on it because of just this. I know two days after I do it, it'll catch a rock dead-center of my line-of-sight.

    Slight tangent, I want to put Crystalline 40% on everything, including the sunroof, and 70% on the front windscreen. It sits in the sun all day, and this time of year, it gets to be 125F-130F inside. Just isn't pleasant.

    Plus, it just ticked over 125K miles. I figure the car has reached its half-life of my ownership.

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