One problem related to engine knocking noise has been reported for the 2012 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Jeep Grand Cherokee based on all problems reported for the 2012 Grand Cherokee.
Vehicle stalls while running at various speeds and at times will not start. The transmission periodically misses and makes hard knocking sound. Started doing this 2017.