Code P0442
Thread Starter
Instructor
Joined: Dec 2003
Posts: 111
Likes: 2
From: Felicity Ohio
Code P0442
Several weeks ago check engine light came on. A scan showed Code P0442 - Evaporative System Small leak. I replaced gas cap, reset CEL and went about my business hoping the gas cap was the issue. Today the same code came up again. Any suggestions ? I can find info on C5codes but not much on my 2008 coupe. My mileage is 18,300. Dealer the next stop? Is this part of the 80,000 mile emissions warranty? Any thoughts are welcome. Thanks in advance guys!
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Usually caused by a bad gas cap. Also, when putting the cap in place, do NOT push it in to make it "tight". Put it on let it thread itself down and just turn it lightly until you get 3 or 4 clicks. Pushing it on while you twist can cause the code too.
Elmer
Elmer
Race Director
Joined: Mar 2010
Posts: 15,971
Likes: 810
Several weeks ago check engine light came on. A scan showed Code P0442 - Evaporative System Small leak. I replaced gas cap, reset CEL and went about my business hoping the gas cap was the issue. Today the same code came up again. Any suggestions ? I can find info on C5codes but not much on my 2008 coupe. My mileage is 18,300. Dealer the next stop? Is this part of the 80,000 mile emissions warranty? Any thoughts are welcome. Thanks in advance guys!
I would like to check your VIN for open service announcements. Will you please private message me? Please reference this thread too.
Your concern could be part of your emissions warranty. It does depend on what your diagnosis is determined to be by the dealership. I look forward to your reply,
Kelly J.
Chevrolet Customer Care
PS Hey Elmer good to see you again!
