This video shows you which components make up the PCV System on Astro and Safari vans. This video lists all replacement parts. The video shows where those parts are located on the van. Done on a 97 GMC Safari. This van had a cracked PCV Vacuum hose which led to a P0171 and P0174 code. Van was running too lean.
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How to Service the PCV System Astro/Safari
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