ccgoodwrench Posted February 3, 2007 Report Share Posted February 3, 2007 i have a 2003 silverado ss, and the evap system is not ready. so i fail inspection, i have tunning sofware HP tuners and loaded my stock tune to the PCM[ before inspection]. i guessing that the evap system gets reset every time i load a program? so far i put 50 miles on the truck and it still reading evap system incomplete. Quote Link to comment Share on other sites More sharing options...
edessa Posted February 3, 2007 Report Share Posted February 3, 2007 It would take up to 40 warm up periods to clear the evap system according to my OBD II tester user manual I have. Quote Link to comment Share on other sites More sharing options...
04CHASE Posted February 3, 2007 Report Share Posted February 3, 2007 rea;;y that is weird. so you cant touch the tune on it for a while then? Quote Link to comment Share on other sites More sharing options...
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