EVAP major leak
Thread Starter
Staging Lane
Joined: Oct 2006
Posts: 53
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EVAP major leak What would be the best way to troubleshoot the EVAP code
major leak. did the simple replace gas cap, but codes comes back after clearing it.
what would be correct diagnosis for this error?
major leak. did the simple replace gas cap, but codes comes back after clearing it.
what would be correct diagnosis for this error?
Last edited by mspeterso; Aug 26, 2009 at 03:05 PM.
LS1Tech Sponsor
Joined: Dec 2005
Posts: 2,932
Likes: 12
From: CT
yep, had the same issue a month or so ago... had the gas cap message on the DIC...
had a service appt. next day anyway, so told the dealer about it, and the trouble code, and they found that they had to replace the evap canister/valve....
been fine ever since...
had a service appt. next day anyway, so told the dealer about it, and the trouble code, and they found that they had to replace the evap canister/valve....
been fine ever since...
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06MonteSS / DiabLew Tune
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06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
TECH Enthusiast
Joined: Apr 2007
Posts: 697
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From: Hudson River Valley, NY
I just replaced my gas cap as I was tossing the 455 code for a while now. See if that shuts it up. I decieded to go with the gas cap because the dealer told me they replaced caps 10 times this year and the canister vent valve 1 time. Last year they replaced caps 15 times and only twice for the vent valve. The new cap goes on much tighter... I always questioned the old cap since it never went on that tight....We'll see if it still chucks the code again.
