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  1. #1
    Jr. Mechanic ibmoses's Avatar
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    Mar 2008
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    "Sweet Home Alabama"
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    147

    Thumbs up Where is the PCV valve on a 03 Silverado 5.3 ?

    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.

    ROLL TIDE!

    Bert
    "Race Car Spelled Backwards is Racecar"

    03 Silverado 2WD extended cab 5.3 with towing package white/silver
    70GS455

  2. #2

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    Quote Originally Posted by ibmoses View Post
    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.

    ROLL TIDE!

    Bert
    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.

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










  3. #3

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    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)
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  4. #4
    Jr. Mechanic ibmoses's Avatar
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    Default

    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...

    Bert
    "Race Car Spelled Backwards is Racecar"

    03 Silverado 2WD extended cab 5.3 with towing package white/silver
    70GS455

  5. #5
    Master Mechanic Silverado Junkie's Avatar
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    Feb 2010
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    Lead Hill, Arkansas
    Posts
    541

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    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.
    1995 Silverado,Z71, 3-inch lift,2-inch leveling kit, SkyJacker Suspension, short ram-air intake, throttle body spacer, MSD ignition coil, straight pipes

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