Question about 2003 Cadillac CTS

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2003 Cadillac CTS V6

Will not start immediately after fill up

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  • pyauch1 Sep 05, 2009

    Which sensor?

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The sensor is wearing out, that causes the gas not to back flow, or you need a new gas cap(pressurized). I would get a GM gas cap, because the after markets aren't that reliable for your car.

Posted on Sep 05, 2009

  • bo manning Sep 05, 2009

    it's a fuel tank pressure sensor

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6ya6ya
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Posted on Jan 02, 2017

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