Check Engine Light


Asked by titans38 Sep 16, 2011 at 01:08 PM about the 2009 Chevrolet Cobalt LS Coupe

Question type: Maintenance & Repair

I bought a brand new '09 Cobalt. I have 38050 miles on it. In less than a month and a half I have had 6 check engine lights come on. Everytime I've taken it to Chevy service center and they've replaced something different every time. I've been talking to Chevy Customer Service and they aren't really helping me at all. Has anyone had this problem? And if so what actions did you take?  -Andrew

10 Answers


i have an 06 cobalt ss and my check engin light kept flashing on then of on then off and it started missing shortly after that then my supercharger went out

4 out of 4 people think this is helpful.

Your Cobalt is very different from the earlier 07 and below year models. It is vague without the facts-what have they replaced, you should ask for the "Code History" which every Dealer would start by obtaining from your computer. With it you can have info to take elsewhere, and get another opinion from them.

Christian Bocka

I have an 09' as well but no problems engine wise. if the engine is running fine like it doesnt seem like its misfiring, warms up fine etc. it s likely it could just be a faulty connection to the check engine light.

1 out of 1 people think this is helpful.
Chris Geary

i have an 09 cobalt coupe, the check engine light has come on 3 times.... each time the dealer has found a loose wire on my mass airflow sensor... maybe this is helpfull

3 out of 3 people think this is helpful.
William Vasiliou

I have an 05 cobalt and my Check Engine light has come on for only 3 reasons...1 Gas Cap not on correctly, 2. O2 Sensor 3. Computer troubles. Get the codes from the dealer. It will help.

5 out of 5 people think this is helpful.

Sometimes I think a sensor or something along those lines may be malfunctioning


I have an '08 Cobalt and have nothing but problems with this lemon! I bought it brand new from the Chevy dealership and have a stack of service repairs that are as thick as a phone book. I've had so many things replaced and it just kept going back to shit. After my warranty was up and still having the same problems that were "fixed" the three dealerships I went to wouldn't do anything and I even wrote GM headquarters...5 months ago. Did I hear back? Nope! So now I'm stuck with this piece of crap. I'm all for supporting my country in every way...but I cannot and will not support GM anymore after this horrible experience. Thanks for the shit mobile GM.

5 out of 5 people think this is helpful.

my sentiments exactly

Jerome Baldwin

Only experienced it when ive played with my air intake, maybe check out your mass air flow sensor, maybe not the case, but it worked for me. Goodluck man!


What up

1 out of 1 people think this is helpful.

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