Question about 2006 Chevrolet Silverado 1500 2WD
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Posted on Jan 02, 2017
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
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
The PCM has determined that a malfunction exists in the electrical
circuit for the vent valve/solenoid in the evaporative emission control
1- Purge or vent solenoids defective
2- Check connevtor and wiring
3- Fuel saturated vapor canister
4- Failed EVAP vent solenoid
Posted on Aug 24, 2010
SOURCE: What are codes P0455 and P0449 ?
evaporative emissions control-has to do with the fumes from the tank-may effect function of vehicle but not a major thing-its for clean air--buy a haynes book car repair and all the codes
Posted on Dec 16, 2010
There may be an emissions leak but a very common issue is the canister vent valve. Make sure if you contact your local dealership that you have your vehicles vin number available.
Posted on Dec 28, 2010
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