"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.**"
