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Thread: tapping noise coming from gas tank???

  1. #1
    texasseville's Avatar
    texasseville is offline Cadillac Owners Member
    Automobile(s): 2006 CTS-V
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    tapping noise coming from gas tank???

    I thought it was the gas cap vibrating on the side but its not. Anyone know what this noise is? I also noticed I dont have the little flap that covers the gas tank hole, so any debris can just go right into the tank if the gas cap isnt on.......


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  2. #2
    CTSV_510's Avatar
    CTSV_510 is offline Cadillac Owners Connoisseur
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    Re: tapping noise coming from gas tank???

    Is the car on or off when it makes this sound? Does it ever stop? I've never seen or heard anything like this.

  3. #3
    texasseville's Avatar
    texasseville is offline Cadillac Owners Member
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    Re: tapping noise coming from gas tank???

    You can only hear it if its running and only when the gas cap is off???

  4. #4
    repenttokyo is offline Cadillac Owners Connoisseur
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    Re: tapping noise coming from gas tank???

    strap vibrating against the tank? does it change pitch when the tank is more or less full?

  5. #5
    texasseville's Avatar
    texasseville is offline Cadillac Owners Member
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    Re: tapping noise coming from gas tank???

    Quote Originally Posted by repenttokyo View Post
    strap vibrating against the tank?
    I'll check.....




    Quote Originally Posted by repenttokyo View Post
    does it change pitch when the tank is more or less full?
    No, it doesnt matter if the gas tank is full or empty, the sound is exactly the same. I just bought it last Friday...the first time I filled it up I was thinking, damn thats a nice stock cam lope banging the gas cap against the quarter panel.


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