Brake Pedal
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Cadillac STS Forum - 2005 through 2012 Discussion, Brake Pedal in Past Cadillac Vehicle Discussion; Because you "HAVE" to press the brake pedal , prior to pressing the start button : sometimes it's squish (Normal ...
  1. #1
    Subsailor613's Avatar
    Subsailor613 is offline Cadillac Owners Fanatic
    Automobile(s): 2006 STS RWD NAV F55 N*1SF
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    Cool Brake Pedal

    Because you "HAVE" to press the brake pedal , prior to
    pressing the start button :
    sometimes it's squish (Normal Power brake pedal)
    sometimes it's HARD (But after it starts, it turns to squish)
    Does this mean I have a vacuum leak,or possibly a check valve
    is faulty, or needs cleaning ?
    Thanks in advance.
    Happy Motoring.

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  3. #2
    curtc's Avatar
    curtc is offline OCD - Obsessive Cadillac Disorder
    Automobile(s): White Diamond 06 STS V8 RWD 1SF F55 HUD/ACC NAV - 126k
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    Mine does this too at times, guess I'll see what the experts have to say.
    Past Cadillac's

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    2001 Seville Touring Sedan - 2006-2011
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  4. #3
    ddalder's Avatar
    ddalder is offline Cadillac Owners Connoisseur
    Automobile(s): 2008 STS-4 N* 1SG
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    Re: Brake Pedal

    This sounds like normal operation. Mine does this, too. I suspect you'll find the longer the car sits after being shut off, the harder the pedal is to push.

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