I have a 2002 truck PCM controlling a 6 liter/4L80e combo. I have recently installed a transbrake which is activated by placing the shifter in manual low then engaging a solenoid. I need to know how to prevent the PCM from commanding a 1-2 shift at all times while shifter is in low to prevent accidental engagement of the brake. Am I overlooking something in the program or is this even possible?