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Old 09-27-2011, 07:45 PM
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HUMTECH HUMTECH is offline
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Join Date: Sep 2003
Location: Canada
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Default Re: Code P0455 and the Gas Cap

P0455 is an evap system large leak detected. Could be a broken evap line, cracked cannister, purge valve or vent valve stuck open. Tough to find without an evap smoke machine and a scan tool to seal system.
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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