Farting or groaning noise from climate control system
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Cadillac STS Forum - 2005 through 2012 Discussion, Farting or groaning noise from climate control system in Past Cadillac Vehicle Discussion; Hello0o0o, The forum is really dead... few threads, few posts... That means one thing... STS has very few problems anyways, ...
  1. #1
    ascariSTS is offline Cadillac Owners Fanatic
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    Farting or groaning noise from climate control system

    Hello0o0o,


    The forum is really dead... few threads, few posts... That means one thing... STS has very few problems


    anyways, that farting noise coming from the AC (when you switch air circulation)... It's drivin me nutzZzzzZzZzz.....


    Any solution to that?... is there any TSB ?

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  3. #2
    Cajonkev's Avatar
    Cajonkev is offline Cadillac Owners Enthusiast
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    Re: That fa*ting noise again

    There isn't a TSB or advisory that I'm aware of yet but when asked my Service Manager new immedietely of the issue and had a fix action for it. Although I have the issue I didn't have it done (for other reasons) but he has been straight up with me on everything else to date.

  4. #3
    Jesda's Avatar
    Jesda is offline Super Moderator
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    Re: That fa*ting noise again

    What did the repair involve?

  5. #4
    Cajonkev's Avatar
    Cajonkev is offline Cadillac Owners Enthusiast
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    Re: That fa*ting noise again

    We were dealing with a seperate issue that I didn't want to get off track of so I didn't dig any further at the time. I'll post it when I talk to him next.

  6. #5
    Zorb750 is offline Cadillac Owners Connoisseur
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    Re: That fa*ting noise again



    Is it vacuum related?

  7. #6
    ascariSTS is offline Cadillac Owners Fanatic
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    Re: That fa*ting noise again


  8. #7
    05STSWOW's Avatar
    05STSWOW is offline Cadillac Owners Member
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    Re: That fa*ting noise again

    I had the same problem months ago and was able to replicate the noise for the service advisor. I called it the seat farts. It is apparently an hvac valve servo (electric or vacuum, I don't know). I think it was a lubrication issue. Capital Cadillac Atlanta fixed it under warranty. No further problems, but it was good for a few laughs for a while...

  9. #8
    GA1019 is offline Cadillac Owners Member
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    Re: That fa*ting noise again

    mine does it too......i agree it is some sort of a/c mixing door operation

  10. #9
    ewill3rd is offline Cadillac Technician
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    Re: That fa*ting noise again

    I have fixed two of them, it's a clearance issue but heavy lubrication will fix it.

    If you turn on the A/C and then press the recirculate button it will do it, press it again and wait a few seconds then press it once more. You'll hear the noise. The cam that drives the recirculation door is tight and it causes a noise on the actuator arm.
    You have to remove the glove box to reach the actuator. The first one I did I removed the whole blower assembly to locate the noise, the next one I just lubricated. It's easy once you get the glove box out. If I do another I'll take a picture.
    You just have to lubricate the pin off the actuator where it goes into the cam and the noise will stop after a few cycles.

  11. #10
    Joe Gros is offline Cadillac Owners Member
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    Re: That fa*ting noise again

    Back in March I started a thread called "Passing Gas" which sounds like the same sound described in this thread. I finally diagnosed the problem for the dealer and he changed the recirculating actuator, under warranty, and it seems like the problem is fixed.

  12. #11
    Cajonkev's Avatar
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    Re: That fa*ting noise again

    My servicing dealer also takes the "lubrication" route and has done several already.

    I had them do mine 4-5 months ago and it was still fine when I turned it back a couple of weeks ago.

  13. #12
    ascariSTS is offline Cadillac Owners Fanatic
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    Re: That fa*ting noise again

    Quote Originally Posted by ewill3rd
    I have fixed two of them, it's a clearance issue but heavy lubrication will fix it.

    If you turn on the A/C and then press the recirculate button it will do it, press it again and wait a few seconds then press it once more. You'll hear the noise. The cam that drives the recirculation door is tight and it causes a noise on the actuator arm.
    You have to remove the glove box to reach the actuator. The first one I did I removed the whole blower assembly to locate the noise, the next one I just lubricated. It's easy once you get the glove box out. If I do another I'll take a picture.
    You just have to lubricate the pin off the actuator where it goes into the cam and the noise will stop after a few cycles.

    Thanks a lot for the help...

    I'll drop my car at the dealer's this saturday.. i'll tell you about it...

  14. #13
    ascariSTS is offline Cadillac Owners Fanatic
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    Re: That fa*ting noise again

    ewill3rd and Cajonkev


    Thanks a lot for the help... I took my car to the dealer and told them whatever you told me... It works... .the noise disappeared

  15. #14
    Cajonkev's Avatar
    Cajonkev is offline Cadillac Owners Enthusiast
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    Re: That fa*ting noise again

    Glad it worked, and I hope it lasts!!!!

  16. #15
    justgreat is offline Cadillac Owners Fanatic
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    Re: That fa*ting noise again

    this board is quite lucky to have a caddy tech on the watch, so to speak...thanks, ewill3rd. it's good to have "an inside view" of our caddys.

    jackg
    06 sts6 on order

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