Cooling fan circuit for Buick LaCrosse II (2009-2013)

2501 2500 COMPUTER DATA LINES SYSTEM 40 39 55 42 GMLAN SERIAL DATA (-) GMLAN SERIAL DATA (+) 44 82 24 8 SENS LO REF ENG TEMP SENS SIG 52 59 42 56 46 45 BATT + VOLT LO SPD FAN RLY CTRL HI SPD FAN RLY CTRL BLK WIRE BLK/LT GRN WIRE BLK/WHT WIRE BRN/YEL WIRE COOLING FAN LOW SPEED RELAY DK BLU WIRE ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE CONTROL MODULE RELAY FUSE GRY WIRE HOT AT ALL TIMES LEFT COOLING FAN HIGH SPEED RELAY LEFT COOLING FAN MOTOR LT GRN/PPL WIRE OF BATTERY) RED/BRN WIRE RED/WHT WIRE RIGHT COOLING FAN HIGH SPEED RELAY RIGHT COOLING FAN MOTOR UNDERHOOD FUSE BLOCK (LEFT SIDE WHT WIRE WHT/DK BLU WIRE YEL WIRE