2010 CHEVROLET COBALT Engine And Engine Cooling Problems

VEHICLE WILL SHUT OFF WITHOUT WARNING AS I AM DRIVING AND WHEN I TRY TO TURN IT BACK ON THE ENGINE SEEMS TO STRUGGLE TO TURN ON. I HAVE NO CHECK ENGINE LIGHT ON DASH BOARD. *TR

WHILE DRIVING MY 2010 CHEVROLET COBALT HOME AFTER LEAVING WORK, I WAS ENTERING ONTO THE THRUWAY WHEN MY CHECK ENGINE LIGHT ACTIVATED, MY DASHBOARD READER SAID, "ENGINE POWER REDUCED", THE CAR THEN LOST ACCELERATION, STARTED TO BUCK AND SHAKE. I QUICKLY PULLED TO THE SIDE OF THE ROAD AND LET THE CAR SIT FOR 15 MINUTES. UPON START UP, I PUT THE CAR INTO DRIVE, IT BUCKED INTO GEAR AND I PROCEEDED WITH CAUTION NOT DOING MORE THAN 30-35 MPH. I WENT TO ADVANCED AUTO PARTS AND RAN THEIR FREE OBDII DIAGNOSTIC READER. THE CODE THAT CAME BACK WAS PO641 - ENGINE CONTROL MODULE - PORT #3. THE CHECK ENGINE LIGHT CLEARED OUT AFTER 2 DAYS. THE CAR RUNS FINE NOW. VERY CONCERNED THOUGH.

POWER STEERING GAVE OUT ON A U-TURN. SHUT OFF THE ENGINE AND IT WORKED AGAIN. LOOKED IT UP ON LINE AND FOUND OUT THERE WAS A RECALL. I BROUGHT IT TO ROTOLO CHEVROLET IN FONTANA,CA (THE PLACE WHERE I BOUGHT IT). THEY TOLD ME THAT THERE WAS A RECALL AND THEY REPLACED MY MOTOR ALREADY. THEY CHARGED ME $100.00 AND TOLD ME THAT THEY COULD PUT AN UPGRADED MOTOR IN FOR ANOTHER $200. THE CAR WAS NOT REPAIRED. YOU CAN BUY THE MOTOR ON LINE FOR $80. IT'S UNDER THE DASH, TWO BOLTS AND A PLUG TO PULL OUT. IT TAKES TEN MINUTES AND A 12 MIL WRENCH. *TR

DRIVING AT APPROXIMATELY 10 -15 MPH, THE CAR COMPLETELY LOST POWER AND STOPPED AFTER MAKING A LEFT TURN. A WARNING CHIME STARTED AND THE INFORMATION DISPLAY SHOWED "POWER STEERING". CAR WAS PUT BACK IN PARK AND RESTARTED. DROVE ABOUT TWO MILES HOME AND TOOK IT TO THE DEALER THE NEXT MORNING. *KB UPDATED 8/22/12*LJ THE ELECTRIC POWER STEERING MOTOR FAILED AND HAD TO BE REPLACED. UPDATED 08/22/12