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How do you fix code P1416 port air circuit malfunction on a 2001 silverado?

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you have a leak in the port side vacuum. try spraying choke cleaner with the straw on the end around the vacuum lines with the engine running, when you hear the engine rpm raise you just found the leak....

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First answer by ID1143322043. Last edit by ID1143322043. Question popularity: 75 [recommend question]

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