One problem related to coolant leaking has been reported for the 2009 Chevrolet Cobalt. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Chevrolet Cobalt based on all problems reported for the 2009 Cobalt.
Car suddenly showed symptoms of coolant loss a dye and pressure test was completed and found no external leaks. I drove the car to work the next day 15 minute commute and upon ariving low coolant indicator poped up I checked the dip stick to confirm my fear that the coolant was entering my oil system 1-way. Had the car towed to the dealership and after 2 weeks of teardown verified the engine had not signs of abuse and the head and headgasket was not warped or leaking/blown. The car was 2 months out of warranty and gm declined warranty. Luckily I have a 3rd party warranty and they agreed to complete the work due to known issues with said engine/ symptoms . Gm notified me they did not have a engine available and it would be until October before the engine was replaced and denied to offer rental while I waited after a month of fighting with gm customer service they agreed to lend a rental car. To this day my car sits in a lot rotting away. A short google search of cracked lnf engines will bring a host of results even major gm aftermarket performance companys are aware of defective castings of the lnf engine . . Read more...