One problem related to power train driveline has been reported for the 2006 Chevrolet HHR. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Chevrolet HHR based on all problems reported for the 2006 HHR.
2006 Hhr key sticks in ignition. Button that ignites shifter broken and sticks in place causing the shifter to be easily engaged at any time. Car is at 70,822 miles. Car dealer states it is not covered by transferable manufacturers 5 yr/100,000 powertrain warranty. Car was purchased used 05/2007. Cost to cover replacement is over 300. 00. If operators do not get this replaced I am sure it will cause property death, injury, and accidents as the shifter can be engaged by a slight bump to park, reverse, neutral, etc.