TL*THE CONTACT OWNS A 2008 CHEVROLET COBALT. WHILE THE CONTACT WAS DRIVING 30 MPH SHE HEARD A POPPING SOUND FOLLOWED BY WHITE SMOKE COMING FROM THE ENGINE. THE VEHICLE WAS TAKEN TO THE DEALERSHIP WHERE THE CONTACT WAS INFORMED THAT THE ENGINE EXPLODED AND NEEDED TO BE REPLACED. THERE WERE NO PRIOR WARNINGS. THE CURRENT AND FAILURE MILEAGES WERE 6000.