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2002 Pontiac Grand Prix Question: Code p0442



clikki48, 3.8L V6, Danville, IL, August 13, 2013, 14:57

This code came up today in a scan. So far, gas cap looks ok and have found no visible hose leaks. What else should I do?

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  • Answer #1

    August 13, 2013, 15:37

    You can take it to a shop and ask for a "smoke test". This will usually locate the leaks location.

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