Question about 2002 Chevrolet Silverado 1500

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2002 chevy 1500 v-6 p0449 code will not remove

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The code is for a problem with the evap vent valve solenoid.
Have you fixed the problem ?

Posted on Jan 17, 2013

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Posted on Jan 02, 2017

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SOURCE: 2005 chevy 1500 silverado eng.

P0449 is the evap vent valve solenoid circuit malfuntion.
P0455 is an evap gross leak
Perhaps the gross leak code has to do with the vent valve. Find the vent valve. It should be near a rectangle evap canister. Maybe under the bed. The small vent line from the fuel tank will go to it. The solenoid is near the cansiter. With the key off the valve will be open. With the key on it should be closed. You may try disconnection the hose and blow through it with both key off and on and see if air will pass through. If the valve has died and is stuck open, that can be the huge leak.

If it is not the leak then a smoke machine should be used. Easier than searching the lines for bad o-rings, splits, or whatevers.

Posted on Sep 02, 2011

  • 1949 Answers

SOURCE: 2006 Chevy silverado 1500 I changed evap sensor

replace evap.. canester ...full of fuel from someone toping off tank

Posted on Nov 27, 2010

  • 10 Answers

SOURCE: error code p0449

i have code reader says p0449 is evaporative emission control system - vent valve / solenoid circuit

Posted on Apr 26, 2009

outdoorsman5
  • 631 Answers

SOURCE: We hooked up an OBD11 Auto Scanner to our 2005

P0449 has to do with the Evap System. The problem could be with wiring short circuit, Could be the EVAP canister purge valve or the ECM.
P0455 has to do with the evap system as well. Could be a leak in one of the hoses to the evap system so you need to check all lines to the evap system. There is also one hose that connects to the top of the tank that we have seen come loose. Could also be a intake leak or a problem with the Canister purge valve. You can fix these yourself somewhat. I would trace down all the lines first to see if anything has come loose under the vehicle to the Black plastic EVAP canisters. Without being able to check the valves you will probably have to take it to a shop to have them checked out or pay the price to replace the valves and gamble they are the problem.

Posted on Sep 29, 2009

  • 262 Answers

SOURCE: Getting codes P0455 and P0449. From what I read,

The vent solenoid valve has been redesigned to correct the problem you are having. I would recommend purchasing the dealer component.
I am not aware of any aftermarket parts suppliers.

Posted on Feb 25, 2010

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Code PO449 Evap Selonoid where is it located? 2008 chevy 1500


P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit
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2002 Chevy Silverado 1500 emits trouble code PO449. Can someone please help?


P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction = the evap valve is not opening, it will have to be replaced.

Jun 15, 2011 | 2002 Chevrolet Silverado 1500

1 Answer

2002 chevy blazer codes 443 449 i replaced the maf sensor the vaf sensor on air horn the emmision valve on the engine the vent valve to even tried the gas cap clear codes drove the truck guess what codes...


p0443 is evaporative emission control system, purge control curcuit malfunction, p0449 is emission control system, vent control curcuit malfunction. p0449 is often a filler cap problem on fuel tank. try tightening cap

May 20, 2010 | 2002 Chevrolet Blazer

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Error code p0449


i have code reader says p0449 is evaporative emission control system - vent valve / solenoid circuit

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2003 Chevy Silverado 1500 Error Codes


P0135 is a bad 02 sensor
P0442 is a evap problem
P0449 is a vent solenoid

i would check the vent solenoid first its a 4ws fuse under the hood in the fuse box make sure you have power to it you should have power at all times the ground comes from the pcm i think if you fix this everything else will work they are all computer controled

Mar 23, 2009 | 2003 Chevrolet Silverado 1500

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