18-006-16REV.A

"FLASH: 3.6L AND 5.7L POWERTRAIN DIAGNOSTIC AND SYSTEM ENHANCEMENTS THIS BULLETIN INVOLVES REPROGRAMMING THE POWERTRAIN CONTROL MODULE (PCM) WITH THE LATEST AVAILABLE SOFTWARE. SOME CUSTOMERS MAY EXPERIENCE A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION. UPON FURTHER INVESTIGATION THE TECHNICIAN MAY FIND ONE OR MORE OF THE FOLLOWING DIAGNOSTIC TROUBLE CODES (DTCS): · **P0335 - CRANKSHAFT POSITION SENSOR CIRCUIT. · P2610 - PCM INTERNAL ENGINE OFF TIMER PERFORMANCE. (5.7L ONLY).** · P0456 - EVAP SYSTEM SMALL LEAK. · P1D73 - ACTIVE GRILL SHUTTER (AGS) PERFORMANCE. **IN ADDITION TO THE ABOVE DTCS, THIS SOFTWARE RELEASE ALSO INCLUDES: · IMPROVED SHIFT QUALITY DURING INITIAL OPERATIONS OF A VEHICLE IN COLD AMBIENT TEMPERATURES. (5.7L ONLY). · IMPROVED KEY-ON ENGINE-OFF OIL PRESSURE LAMP BEHAVIOR.**"