One problem related to check engine light on has been reported for the 2008 Chevrolet HHR. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet HHR based on all problems reported for the 2008 HHR.
I also own a 2008 chevy Hhr lt that is loaded. I purchased this vehicle brand new and currently have 39,000 miles on it. I have had nothing but trouble with this vehicle. I have had all of the following problems and gm replaced some of them. Gm installed a new intermediate steering column, drag links,turned rotors 4 times and right side upper ball joint. After the warranty expired, the brakes once again went to hell in a hand basket. I ordered a set of racing rotors and ceramic brakes, this cured the brake problem. At 37,000 miles, the check engine light came on and I had it checked out and it was the cam sensor. I replaced the sensor and reset the light and it did not fix the problem. I really like the vehicle, but gm needs to do their homework and do more research and development.