The Performance and Hot curves inhibit the 3->4 for TP at 50% and up...
( Performance = Tow/Haul switch position, Hot = overheating mode )
but the Normal and Cruise curves allow this shift.
The Performance and Hot curves inhibit the 3->4 for TP at 50% and up...
( Performance = Tow/Haul switch position, Hot = overheating mode )
but the Normal and Cruise curves allow this shift.