03 transmission not working in tow haul mode

[rockyridge]

my 03 f350 6.0 automatic tranny doesnt seem to work in tow mode and today the light on the end of the gear selector was flashing in a steady blinking code? Any ideas

[Powerstrokin03]

Your trans was throwing a code.. Guessing a wiring hardness or solenoid problem. But someone else should be able to join in for more info.