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    2016 Equinox "puffing" sound

    I hear a puffing sound when shutting off the car. It is the V6 engine. I hear the sound right near the firewall in the middle of the engine. Car also has a "small evap" leak but not sure if these two events occurred at the same time or if they are even related to each other.
  2. C

    Oxygen Sensor

    How many does the 2016 V6 have? I only see 2 and some sites say 4. My code reading tool gives readouts for B1S1, B1S2, B2S1 and B2S2. Where are they located? especially the one the code reader says is having problems...B2S2. Thanks
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