Evap Leak

Sssniper · 05-08-2007, 05:01 PM

Does anyone know what a possible fix is for this code P0455-Evaporative Emission Control System Leak Detected (gross leak) It is on a 2003 Silverado Z71 w/ a 5.3
Thanks.

mrjohnwayne · 05-08-2007, 07:21 PM

Don't even know what that is. Sorry bud.

436'd skylark · 05-08-2007, 11:11 PM

well, for starters there is an evap system. Evap is simple. Its a vacuumed controlled deal that puts a small amount of pressure in the tank and lines, to make sure there are no leaks. you'll need a smoke test. probably a loose gas cap. Don't fill it while its running either that will set it off for sure. Have the code clear, check your cap, and keep driving. if it comes back on, have a smoke test done.

mrjohnwayne · 05-09-2007, 06:31 AM

ah
why cant they say fuel system evap blah blah.....

05-08-2007, 05:01 PM	#1
Sssniper Junior Member Join Date: May 2007 Posts: 1	Evap Leak Does anyone know what a possible fix is for this code P0455-Evaporative Emission Control System Leak Detected (gross leak) It is on a 2003 Silverado Z71 w/ a 5.3 Thanks.

05-08-2007, 07:21 PM	#2
mrjohnwayne Senior Moderator Join Date: Apr 2005 Location: Texas Posts: 3,789	Don't even know what that is. Sorry bud. __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

05-08-2007, 11:11 PM	#3
436'd skylark Senior Member Join Date: Mar 2007 Location: Pennsyltucky Posts: 1,000	well, for starters there is an evap system. Evap is simple. Its a vacuumed controlled deal that puts a small amount of pressure in the tank and lines, to make sure there are no leaks. you'll need a smoke test. probably a loose gas cap. Don't fill it while its running either that will set it off for sure. Have the code clear, check your cap, and keep driving. if it comes back on, have a smoke test done. __________________ Joe 89 K2500 Chevy, Wee-Oh-five 294K miles 1962 Scout 80 parts I guess 1966 Scout 800 resto job 2005 Chevy 2500HD Short cab long box DURAMAX 1996 P30, 6.5 NA Mac Mobile whole lot of buicks

05-09-2007, 06:31 AM	#4
mrjohnwayne Senior Moderator Join Date: Apr 2005 Location: Texas Posts: 3,789	ah why cant they say fuel system evap blah blah..... __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

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