TL* THE CONTACT OWNS A 2007 CADILLAC CTS. THE CONTACT STATED THAT THE ENGINE EXPLODED. THE CONTACT WAS DRIVING 78 MPH WHEN THE CRUISE CONTROL INADVERTENTLY DISENGAGED. A LOUD BOOMING NOISE EMITTED FROM THE ENGINE WHILE A FLASH OF FIRE AND SMOKE EMITTED FROM THE REAR EXHAUST. SMOKE THEN BEGAN TO RISE FROM THE ENGINE. THE CONTACT ALSO STATED THAT A RATTLING CHAIN SOUND ALSO BEGAN TO COME FROM THE ENGINE. THERE WERE NO WARNINGS PRIOR TO THE FAILURE. THE VEHICLE WAS TAKEN TO THE DEALER, BUT THE DEALER WAS UNABLE TO INSPECT THE VEHICLE. THE DEALER INFORMED THE CONTACT THAT THIS WAS A KNOWN FAILURE. THE FAILURE AND CURRENT MILEAGES WERE 38,991.