One problem related to transmission sensor has been reported for the 2006 Chevrolet Cobalt. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Chevrolet Cobalt based on all problems reported for the 2006 Cobalt.
The transmission pressure sensor failed at approx 72,000 miles. It was replaced and then the new one failed again at approx 90,000 miles. There is obviously some type of manufacturing defect present.