Offroad Trailblazers and Envoys

P0455

Something not working right?

by madmanvillain » Wed May 18, 2011 6:31 pm

I have a P0455 code, reads evaporative emmissons control system gross leak. Any thoughts? Dont notice any change of power or anything. Any help is greatly appreciated.
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by djthumper » Wed May 18, 2011 7:00 pm

The first thing to check would be the gas cap. Make sure it is tight.
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by madmanvillain » Wed May 18, 2011 7:02 pm

Ya i checked tha andit kept coming back up...prob gunna try a different cap...dont smell or seleakinging leaking so i dont think i have a hole..
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by steveroche » Wed May 18, 2011 7:12 pm

I had the same thing, it was just the gas cap...put it on and pull real hard on it. If it pops off then try putting it on again or get a new one if you can't seem to get it to stay on.
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by djthumper » Wed May 18, 2011 7:18 pm

You reset it and it came back? I know on most vehicles it goes away on its own after driving for a while. Purge solenoid valve, the cap is normally the first thing to try though.
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by madmanvillain » Thu May 19, 2011 8:27 pm

Well...new cap last night...hasnt come back yet...
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by djthumper » Thu May 19, 2011 10:15 pm

that is good to hear so far
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