One problem related to crankshaft position sensor has been reported for the 2007 Chevrolet HHR. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Chevrolet HHR based on all problems reported for the 2007 HHR.
Car still has paper tags, had 3k miles and it just stopped working the traction control light came on, engine would not idle and ran rough. We took it to the dealer who said a crank sensor went out, it took four days to get the part in and they have replaced it. We will see ho it goes!.