Discuss your 2000-2005 Bonneville SE, SLE, SSEi, Buick Le Sabre 00-05 and Buick Park Avenue 97-05. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
My car is throwing a PO440 code. been doing it for awhile. I've checked the cap and cleaned up the neck. Im gonna look at the purge valve tomorrow...
Heres what my GM manual says. Maybe you'll find it interesting? Sorry if the pictures are massive. I was worried if i shrunk them the text would be unreadable.