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Re: 2004 Yukon Denali EVAP.What Code is This?
Posted to Technical Discussion Forum on 9/2/2007 1 Reply

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That is a good thought, Derek. I thought maybe the AIR, O2 response, etc was being tested, but Bob said there was no change in the O2s when this happened.

Maybe it is software related or a fuel tri... Login to read more.

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