Hey you guys. I have a 2015 GMC Acadia Slt. It recently threw codes p0174 and p0171. The engine check light will stay on for a few days then go off. My brother put in new spark plugs and ignition coils. We also put in a new purge valve. However we hear hissing. He stated that a hose was leaking but we don’t know what hose it is. Picture posted.
Scheidtfamily
Is this it? 2 links
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PCV Valve Tubing-VIN: D, Eng Code: LLT GM GENUINE PARTS CANADA 12634302 | eBay
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