Question about 2005 Pontiac Montana SV6

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Error codes 131,139, just got back from dealer 1500.00 to fix. Wanted to know what errors were so I could repair myself

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I'm guessing that you need a new catalytic converter. $1500 bones seems like a lot of moola to me, but then I've never done one on a minivan.

Posted on Mar 27, 2009

  • steelmanwy Mar 27, 2009

    Let me amend the first statement - it could also mean that one or both of the O2 sensors is bad also.



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