"FLASH: TRANSMISSION SHIFT AND DRIVABILITY ENHANCEMENTS
THIS BULLETIN INVOLVES REPROGRAMMING THE TRANSMISSION CONTROL MODULE (TCM) WITH THE
LATEST AVAILABLE SOFTWARE.
SOME CUSTOMERS MAY EXPERIENCE A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION. UPON
FURTHER INVESTIGATION, A TECHNICIAN MAY FIND THE FOLLOWING DIAGNOSTIC TROUBLE CODE (DTC)
STORED IN THE TCM MEMORY:
· P0731 - GEAR RATIO ERROR IN 1ST.
THE FOLLOWING ENHANCEMENTS ARE INCLUDED IN THE SOFTWARE UPDATE:
· **2-1 COAST DOWN IMPROVEMENT (3.0L ONLY).
· 3-2 COAST DOWN IMPROVEMENT (3.0L ONLY).
· IMPROVEMENT TO 5-3 DOWNSHIFT WITH PEDAL TO IMPROVE 5-3-2 SHIFT (3.0L ONLY)
· 6-5 COAST DOWN IMPROVEMENT (3.0L ONLY)
· 2-3 UPSHIFT WITH LESS THAN 30% PEDAL IMPROVEMENT (3.0L ONLY)
· CLUTCH C ADAPTION STABILITY IMPROVEMENT (IMPROVES SHIFT QUALITY FOR NEW
TRANSMISSIONS ON GEAR SHIFTS THAT USE CLUTCH C) (3.0L ONLY).
· GARAGE SHIFT TO D IMPROVEMENTS (3.0L ONLY).
· ROLLING GARAGE SHIFT IMPROVEMENTS (3.0L ONLY).
· IMPLEMENTATION OF END OF LINE (EOL) ADAPTION TO IMPROVE SHIFT QUALITY ON BRAND NEW
TRANSMISSION.
· DIAGNOSTICS IMPROVEMENTS (3.6L AND 5.7L).
· IMPROVE SHIFT QUALITY ON BRAND NEW TRANSMISSION (5.7L ONLY).
· IMPROVEMENT TO FIRST 1-2 SHIFT AFTER START (5.7L ONLY).
· IMPROVEMENT TO 1-2 SHIFT, ESPECIALLY FOR COLDER OPERATING TEMPERATURES (5.7L ONLY).
· 2-3 SHIFT FEEL IMPROVEMENT ESPECIALLY FOR COLDER OPERATING TEMPERATURES (5.7L ONLY).
· COASTDOWN SHIFT IMPROVEMENTS (6-5, 5-4, 4-3, 3-2, 2-1) (5.7L ONLY).
· COASTDOWN SHIFT FEEL REFINEMENT FOR DOUBLE DOWNSHIFTS (5.7L ONLY).
· KICKDOWN IMPROVEMENTS FOR THE FOLLOWING SHIFTS (7-6-5-4-3, 8-6-5-4, 6-3-2, 5-3-2, 4-2)
(5.7L ONLY).
· IMPROVEMENT TO 4-2-1 (5.7L ONLY).**
· IMPROVED 7TH GEAR UPSHIFT TIMING.
· DOWNHILL ENGINE BRAKING IMPROVEMENTS."
