This is the link for the part i used to fix my 2.
2008 silverado evap vent solenoid location.
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Evap canister and related components type two.
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Evap canister purge solenoid valve and related components 4 8l 5 3l 6 0l engines.
If this is the case and your gas cap is seating properly the code should go away by itself or worse case send a code reset to the computer with an obdii device.
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2008 silverado 1500 ltz posted february 18 2014 had my 08 silverado throw codes 0499 and 0496 after everything i read i was thinking it would be a simple purge solenoid replacement but i took it to the dealer for a accurate diagnosis and they said i had my evap valve stuck open.
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P0449 evaporative emission control system vent valve solenoid circuit malfunction this is commonly caused by something as simple as not having your gas cap on completely.
Check prices reviews on aftermarket stock parts for your 2008 silverado 1500 vapor canister vent solenoid.
This video is about how to fix the check engine light code p0499 that comes on because of the evap canister.
Dtc p0446 restricted blocked evap vent path set check engine light on replace evaporative emission evap vent valve solenoid assembly and add relocate filter box using service kit models.
Evap canister and related components type one.