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Old Apr 18, 2012 | 07:21 PM
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sea six's Avatar
sea six
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Default evap code

I have an 06 LS2. I installed a m112 supercharger a few years ago. I have been getting a code P0455 and a GAS CAP on DIC warning. I have replaced it twice but still have same issue. Is there something in the vacuum lines or a valve that could have gone bad. Car runs great but have a problem with CT emission.

Thanks
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Old Apr 18, 2012 | 09:21 PM
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This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.
http://www.obd-codes.com/P0455

other posts...
http://forums.corvetteforum.com/c5-t...post1575303318

I did a parts list, seriously i have no clue if something in this is the value (sorry), maybe someone can point it out..
http://parts.nalleygmc.com/showAssem...=evap canister

Last edited by ChevyDave; Apr 18, 2012 at 09:27 PM. Reason: added parts pic
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Old Apr 19, 2012 | 08:16 PM
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sea six
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From: Lebanon CT.
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Thanks Dave. I will do some inspecting this weekend. If anyone else has some ideas they would be appreciated.
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