runs hot(dextrol coolant).? 2002 chevy malibu v6 3.1 engine runs great from cold start up to the point where the temp gauge on dash reaches half way mark. After about ten minutes of driving with temp gauge at half way the temp gauge starts to rise to 3/4 mark. At this point you can hear a noticeable ticking from engine. Seconds later car stops running. Any attempt to restart car results in engine missing and vibrating beyond belief. Intermittent check engine light resulting in various codes suggesting o2 sensor's, engine coolant temp sensor. knock sensor but not at the same time. Had intake manifold repaired by certified GM shop only eleven months ago(dextrol coolant). Only 75000 miles on car with regular preventive maintenance. E.C.M. problem? several friends with same engine type have similar problems. Any suggestions would help alot of people. Thanks
