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Re: 2004 Yukon Denali EVAP.What Code is This?
Posted to Technical Discussion Forum on 9/4/2007

Hi Derek,

[...trimmed text...]

Yes! That makes a lot of sense. It was very steady-state, idle, so PCM could run such a test. So to test this theory, we could short both front O2s high, and see how trims, RPM and PCM re... Login to read more.