My brother has a 2003 buick century 3.1 he is getting code p0446, he has changed the evap canister valve, charcoal canister vent valve, pcv valve and the rubber on the gas cap and the code will not go away. Do you have any idea of what else it could be, he is saying there is no gas leak.
Looking for a Used Century in your area?
CarGurus has 81 nationwide Century listings starting at $2,695.
Own this car?
Share your experience with others.
2003 Buick Century
Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.