6.6l vin 6, cooling fan circuit for GMC Savana G3500 (1996-2013)

68 47 28 4 SENS SIG LOW REF CLUTCH CTRL SPEED SIG BLK WIRE BRN/WHT WIRE DK BLU WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (TOP OF ENGINE, NEAR THERMOSTAT HOUSING) ENGINE COOLING FAN (BEHIND RADIATOR) FAN CLTCH (D) FUSE 58 FAN CLTCH (D) RELAY 75 GRY WIRE HOT W/ PWR/TRN RELAY ENERGIZED LOW REF TAN WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE YEL WIRE