SOURCE: PCV VALVE REPLACEMENT
The pcv valve is usually located on one of the valve covers look for the larger vacuum hose coming from the intake manifold and follow it you should find it that way. changing it is a matter of sometimes using a pair of pliers to remove a small clamp then rotate back and forth the pcv valve while holding the hose and pulling it away and off.
SOURCE: how to install a pcv valve on a 2004 chevrolet 5.3
where is the pcv valve located on a 2002 chevrotet suburban
SOURCE: where is the pcv valve on located on 2002
It is found in the rocker cover with a hose attached to it, just a small plug. Hope this helps.
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