Transmission Fluid Pressure Manual Valve Position Switch Logic. GMC Truck Yukon XL

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2004 🢒 Yukon XL - 4WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Transmission Fluid Pressure Manual Valve Position Switch Logic

Range Signal	A	B	C
Park/Neutral	HI	LOW	HI
Reverse	LOW	LOW	HI
Park/Neutral	HI	LOW	HI
D4	HI	LOW	LOW
D3	HI	HI	LOW
D2	HI	HI	HI
D1	LOW	HI	HI
Illegal	LOW	HI	LOW
Illegal	LOW	LOW	LOW
LOW = 0 volts HI = Ignition voltage