Where is the PCV valve on a 03 Silverado 5.3 ?

Discussion in 'GM Powertrain' started by ibmoses, Jul 6, 2010.

  1. ibmoses

    ibmoses Rockstar 100 Posts

    I have not been able to spot the PCV valve on my engine(5.3) can someone point me towards it, please?
    And while we are at it are there any tricks to removing/reinstalling it?

    My truck has right at 100,000 miles on it now so I figured I would inspect the PCV valve and make sure it is functioning properly, so thanks for any tips or suggestions.



    99'HEARTBEAT MODERATOR Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    It is located on the back of the Driver Side Valve Cover,it is inside a Rubber Grommet....all you need to do is pull out.
    1 person likes this.
  3. dsfloyd

    dsfloyd Epic Member 5+ Years ROTM Winner 1000 Posts

    its where 99 heartbeaat said, but be careful. Not all are removeable. Mine isnt (i know different year and engine). I started to try and get it out before realizing that mine is permanent. didnt say it in the manual.

    ---------- Post added at 02:16 PM ---------- Previous post was at 02:10 PM ----------

    according to the fram catalog if you have the flex fuel L59 (z) its not required. the other 5.3 LM7 (T) takes one. (part#fv410)
    1 person likes this.
  4. ibmoses

    ibmoses Rockstar 100 Posts

    There is a device that resembles a PCV valve in the rear of the driver side valve cover, it does not have any moving parts... I pulled it out and looked it over.

    The guy at Advance Auto Parts says they dont list a PCV valve for my truck...

  5. Silverado Junkie

    Silverado Junkie Rockstar 4 Years 500 Posts

    The best thing i did was when I installed some aftermarket valve covers on my truck, was i replaced my pcv hoses with some regular rubber hoses instead. Simple, easy and cheap to replace now.

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