2006 Chevrolet Cobalt Problems
RepairPal has identified the most common problems with the 2006 Chevrolet Cobalt based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
A rattle-type noise may be noted on cold start-up due to a failing timing chain tensioner. Chevrolet revised the design of the tensioner multiple times over the production of the Cobalt, replacement is necessary to remedy this condition. A failed chain tensioner may result in a broken timing chain and subsequent engine damage if the issue is not diagnosed and repaired.
A Loose or worn gas cap may cause Check Engine Light to illuminate.