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Re: 2004 Yukon Denali EVAP.What Code is This?
Posted to Technical Discussion Forum on 9/2/2007 3 Replies

Hi Gregory,

[...trimmed text...]

Actually, the Tech 2 is commanding the vent closed, and 0% duty cycle on the purge (closed, off) The system should be sealed and show a slight pressure rise, if anything.

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