GMC Envoy II (2001-2009) Cooling fan circuit

4.2L 4.2L 5.3L, 6.0L 5.3L 6.0L BLK WIRE CLUTCH CNTRL COOLING FAN (FRONT OF ENGINE) DK BLU WIRE ECT SENS SIG FAN FUSE 20 FAN RELAY 45 FAN SPEED SIG GROUND GRY WIRE GRY/WHT WIRE HALL SENSOR HOT IN RUN OR START LOW REF UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) WHT WIRE WHT/BLK WIRE YEL WIRE