code p0449 on 2007 Chevrolet Silverado 1500

2007 chevy silverado classic. code p0449 light will come on and after a few days go off, then come back on. I have taken the solenoid and canister off and cleaned. also looked for leaks. have checked and tightened gas cap. when i reset the light it will stay off at least a day before coming back on. Thanks

by in Jefferson, TX on April 14, 2010
2 answers
ANSWER by on April 15, 2010
There is a service bulletin for the code p0449 setting on your 2007 Chevrolet Silverado 1500. The number is #09-06-04-028. The repair suggested is to replace the canister vent solenoid and relocate it to a position near the fuel filler neck. This may help but there is know way to tell for sure if this will correct your particular issue.
ANSWER by on April 28, 2012
what is P0449
Related Items:
my email is My eng check light stays on most the time. Goes off when I fillup sometimes. The test code is p0449. What does this mean and what's the simple solution.
code p0449 and p0455 what do i check first?
happened after getting gas, reset gas cap,hooked-up to analyzer got OBDII CODE P0449 & turned off check engine light CHECK ENGINE LIGHT came on next time I started truck. Took to local inspection...
One or both secondary air injection check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves...
I was getting all 3 codes p0172,p0175,p0449. I put on a new vent valve solenoid and that fixed the p0449 code. I'm still getting codes p0172,p0175 and as it gets colder outside it is getting harder...

Related Content