We had seen problems on these engines when the main timing chain tensioner begins to fail. The engine will make a terrible rattle noise and then gets quiet. If problem is not address promptly, timing chain will skip over the cam gears causing great damage to engine. GM had extended the warranty on these engines up to 100,000 miles, call dealer for more details. Also if engine is over 80,000 miles is a great idea to replace the water pump, it w...
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Newest reported 2007 Chevrolet Cobalt problems
A Loose or worn gas cap may cause Check Engine Light to illuminate.
Just a little information on the Cobalt 2.2 Ecotec. The Cobalt has 46k on it and no mods, just stock. Normally it runs and starts like a champ.
I went to the store last night and when I came out I had a hard time starting it. The SES light came on and it ran a little rough with a slight ticking noise. Made it home and thought I would disconnect the battery and clear the codes from the computer. Started it up again and the ticking got a lit...