Two problems related to anti-theft controller have 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.
The vehicle anti theft light keeps coming on. When this occurs the vehicle jerks in drive, hard to stop, wheel will lose power steering in drive, and all needles will move. The rpm, mph, and gas needle continues to fluctuate. The gas needle will indicate low fuel when fuel is present. I can never know what speed I'm doing. The vehicle flashes power steering digitally. The car will shut off in mid drive! taken to many mechanics including dave gill Chevrolet and no one fully diagnosed the issue!.
This has happened twice, my car wont start and the anti theft on the dash comes on but there's nothing on to kill the battery. Also sometimes while driving my service air bag light comes on but goes off right after. Last thing is my power locks would go crazy just locking and unlocking either when the car was off or in motion.