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lowridergmc · 03-10-2013, 05:36 PM

possible intake gaskets leaking.if they are the orange ones change them to the new green ones.

03-10-2013, 05:36 PM	#2
lowridergmc Registered User Join Date: Dec 2012 Location: saskachewan Posts: 150	Re: 2002 gmc yukon codes: P0171 P0174 possible intake gaskets leaking.if they are the orange ones change them to the new green ones.