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P0455 - 2005 Chevrolet Impala

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  • Chevrolet Master
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CODE PO455 IS EVAP SYSTEM LARGE LEAK DETECTED.POSSIBLE CAUSES * IS FUEL FILTER CAP IS VERY LOOSE *.FUEL TANK FUEL FILLER NECK OR SENDING UNIT ORING IS LEAKING *.FUEL TANK PRESSURE SENSOR IS DAMAGED DISCONNECTED OR IT FAILED *.FUEL TANK VAPOR LINES IS CLOGGED DAMAGED OR DISCONNECTED *.PURGE VALVE VAPOR LINE IS CLOGGED DAMAGED OR DISCONNECTED *.PURGE VALVE IS NOT OPENING IT MAY BE DAMAGED OR STICKING * VENT SOLENOID IS NOT CLOSING.IT MAY BE BE DAMAGED OR STICKING *.OR PCM HAS FAILED.

Posted on Oct 04, 2009

  • amorrison333 Aug 08, 2011

    what's a fair price range on how much some of these things would cost to repair????

  • Jonah Oneal Aug 09, 2011

    MOST TIME YOU HAVE BAD LEAKING GAS CAP.OR FAULTY EVAP CANISTER PURGE VALVE. YOU HAVE TO CALL THE AUTO PARTS STORE GET A PRICE CHECK OR GO ON LINE INTERNET LOOK UP AUTO ZONE PARTS AND IT WILL GIVE YOU PRICE FOR PARTS.

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Code p0455 on envoy 2004


large evap leak --check gas cap that it is on --look under truck at rear of fuel tank by spare tire and check the evap canister and hoses the following link will assist you
https://www.obd-codes.com/p0455 How to Fix Check Engine Light P0455 Emissions Purge Valve Replacement How to Fix Check Engine Light P0455 Emissions Purge Valve Replacement

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Gm dignostic code p0455


A little late but check your gas cap first.

http://www.p0455.com

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Getting a P0455 code, what is it?


P0455 is a evap gross leak. your vent control valve is stuck open you will need new vent valve and a water separator kit to resolve the P0455/evap gross leak.

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