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5.3L pcv valve replacement

This is a discussion on 5.3L pcv valve replacement within the Technical / Maintenance forums, part of the General Discussion category; I want to change the pcv valve in my 02 5.3L Z71 and dont know where it is or how ...

  1. #1
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    Question 5.3L pcv valve replacement


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    I want to change the pcv valve in my 02 5.3L Z71 and dont know where it is or how to change it. Any help would be great. Thanks

  2. #2
    GONE FISHIN' Trolin's Avatar
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    Re: 5.3L pcv valve replacement

    On my 2001 I found it on the drivers side valve cover towards the firewall. Pull it out by hand and pull hose off valve and insert new one on hose and push into valve cover. It will take a few seconds and is a very easy replacement.

    2001 Z71 ecsb -Sunset Orange-
    2002 Tahoe

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    Re: 5.3L pcv valve replacement

    +1.

    It's way in the back in the metal tube.

    It's not the old rattle type, it's straight through (wierd)...

    Let us know...

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    Re: 5.3L pcv valve replacement

    Thank you

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    Registered User Tweaks's Avatar
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    Re: 5.3L pcv valve replacement

    If it is the hollow/straight through design then there is no reason to replace. If it is the rattle type then replace it with the updated straight through version.
    00 RCSB Z71/JBA cat-back/Z71 Tahoe valance/EBC slotted&drilled rotors with SS lines & SS braided hoses/Edelbrock headers/BB tune/6000k HID low beam & fog lamps/Auto-headlight disable mod(nice)/Vette servo/LT1 E-fans/LED gauge cluster/Titan 18" wheels/Rollpan/Belltech rear sway bar/2-4 drop

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    GONE FISHIN' Trolin's Avatar
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    Re: 5.3L pcv valve replacement

    I just replaced mine and was sold the rattle type. Is that bad? what is this straight through design you speak of? Is it better? and why?

    2001 Z71 ecsb -Sunset Orange-
    2002 Tahoe

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    Re: 5.3L pcv valve replacement

    Mine is an '03 5.3L and maybe they changed the type of PCV Valve. I was surprised.

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    Re: 5.3L pcv valve replacement

    Quote Originally Posted by tpitcher View Post
    Mine is an '03 5.3L and maybe they changed the type of PCV Valve. I was surprised.
    GM TSB 01-06-01-029B changed the PCV from rattle type to an orifice (small opening) type to resolve an oil consumption issue. The new GM #12572717. You could check your local supplier if they have a cross reference or interchange part available using the GM part #. As mentioned above, if orifice/small opening type is already installed, no need to replace it. If it's clogged, clean it out. Hope this helps.

  9. #9
    Registered User Chevy53's Avatar
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    I replaced one in my 02 with rattle type and my old one was stuck and didn't do anything, I don't got any open tsb's so it's not all trucks I'm assuming


    -Ziggy-
    2002 silverado 1500 extended cab short bed 5.3L

    current mods -

    Aftermarket speakers and aftermarket headunit
    Cree reverse light bulbs
    Custom flowmaster original 40 series exhaust
    Candied tails
    Blackbear Tune


    Future
    Converted cluster bulbs to leds - only turn signals to go

 

 

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