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Showing results for tags 'codes p0101'.
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My GMC Yukon 05 model 5.3L was given to me by a friend because I had recently wrecked my 15 Silverado. I knew and he knew as well that the Yukon wasn't running very good. It would fire right up but it would idle as if out of time or something was stopped up. We put a scanner on it and we had so many codes pop up. the knock sensor code was the first one I tackled by replacing both knock sensors. replaced the intake gasket. I have put a new mass air flow sensor on it and plugs and plug wires. after putting everything back together I cranked back up and it was running worst. clear the codes hooked it back up to the reader and had these 2 codes pop up. P0101(MASS AIR FLOW) even after replacing the old with the new . P0449(EVAPORATIVE SILONOID) I'VE GOT A BRAND NEW ONE BUT HAVEN'T REPLACED IT. what should I do from here need help please point me in the right direction. What should I do next?
