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I just had the same problem. After reading posts about cylinder head, and/or valve issues, I took my car into the dealer to check out the check engine light that went on last night. My problem? The gas cap seal had a wrinkle in it, allowing air into the system. Check that out before going to extremes. I'll do that next time, before spending $135 to tell me the gas cap wasn't on right.
This is apparently a common Aveo problem. Even when that cap seal looks good and you swear you clicked in on right, it still will trigger the check engine light. Take the cap off, check the seal, replace the cap correctly and it should reset the light. It might take a while and you may have to repeat a few times but it should eventually come around.
My gas cap was loose. I closed it, drove around the block and the light was gone.
What else can I help you with?
Why would Chevy Malibu lose power check engine light come on then oil light come on die and will not start?
this is for safety so engine does not get ruined,check oil level!!
Where would you fine check engine light codes for a Chevy silverado truck?
You can buy the check engine computer and the book comes with it. I know, I bought one. When your check engine light comes on, you plug it in and check the engine and it will give you the code and you look in the book for that code and it gives you the answer.
Why would the check engine soon light come on in an 2005 Chevy Cavalier?
If it is easy, your gas cap is not on correctly.
How do you know if the oxygen sensor on a 1995 Chevy S10 4x4 is bad?
The check engine light would come on.
What would cause a 1989 Chevy pickup to run like it is flooding out?
The engine coolant temp sensor can do that. If you have a check engine light on, have the codes read.
Why would the check engine light come on in a 2002 Chevy Malibu?
The light could come on for a number of reasons. The vehivle would have to be hooked up to a scanner to determine the engine code or codes. After you determine the codes you can isolate and fix the probelem. If the check engine light is on there will be a computer code that will appear on the scanner.
Why would a check engine light on a 2002 Chevy impala come on?
You need to connect a OBD-II Scanner to find out.....
How do you turn off or reset the check engine light on a 2006 Chevy C4500 duramax?
I have a 2006 Chevrolet C4500 Duramax Diesel and I would like to know how to turn off or reset the check engine light on the truck.
How can you check the knock sensor on 2007 Chevy Cobalt?
If a knock sensor was bad, the check engine light would be illuminated and the code(s) set would indicate so.
What would make check gauge light come on in 1999 Chevy Tahoe?
Check gauge? Never heard of a check gauge light. If you are referring to the check engine light it is on because there is a problem with the emissions system. You need to have the ECU scanned by a professional.
What would cause a 2013 Chevy Malibu LTZ to delay in acceleration?
If the check engine light is illuminated, start with scanning for codes.
Why would your check engine light come on after replacing the water pump on my 96' Chevy Lumina?
Replacing the water pump will not cause the check engine light to come on. Either it is a coincidence or you have accidentally disconnected a wire or damaged a sensor somehow.
