List Of 2011 Chevy Hhr Check Engine Light References. Web if your chevy hhr has a flashing check engine light means that there is a catalyst damaging misfire (it can damage the catalytic converter and o2 sensors). Web the 2011 chevrolet hhr has 3 problems reported for check engine light on.
Check engine light / diagnose. Irregular engine running, there are misfires when accelerating abruptly or driving at low revs. Have your local auto parts store read the codes before you clear them.
