One problem related to suspension noise 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.
Between approx 45 and 60 mph vehicle sounds as if driving over rumble strips. Will stop vibrating intermittently above 60 mph. Vibration is felt from front passenger side. The steering wheel does not sway. No trouble shifting. Between 3 mechanics have been given 3 different answers: loose body part vibrating in wind, suspension, transmission. Had balance and alignment checked with no issues. Contacted gm dealer to check recalls and other known issues, none found. No previous symptons, vehicle drove normally until 6/18. Do not currently drive vehicle out of fear of something breaking or falling apart. Am still trying to get diagnosed.