2013 5.7 P0456

[AZOZ]

Just wanted to post fix for P0456, P0457 and P0455 codes small and large EVAP leaks. I replaced the canister purge valve/

Canister Purge Valve PV572​

(located under the battery). Still blew codes so I do not have a smoke tester so I used my gas sniffer and found no detectable leaks along all the lines. Then I replaced the

Fuel Vapor Leak Detection Pump ESM1003 (located on the rear top of the gas tank). I did remove /bent back part of the heat shield to remove and install the pump. This pump has a little clip under it that needs to pressed to unlock it and rotate it clockwise to remove. There is youtube video. No codes after replaced both switches. My gas cap was bad as well but found that on emissions and in AZ they replace it for FREE. So for about $60 in parts you can fix. I have read Stealerships charging $600 +.​