GMC Yukon III (2006-2014) Manual a/c circuit

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LED CNTRL IGN VOLT GROUND B(+) GMLAN L 193 735 1050 597 6101 DEFOGGER SYSTEM A/C ON IND A/C ON SWITCH LOGIC AUXILIARY HVAC CONTROL MODULE (CENTER OF HEADLINER) BLK WIRE BLK/WHT WIRE BLOWER CONTROL SWITCH BLWR SPD BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DFRST VAL DK BLU WIRE DK GRN WIRE EVAPORATOR TEMPERATURE SENSOR (ON HVAC ASSEMBLY) FRONT DEFOGGER IND FRONT DEFOGGER SWITCH GRY WIRE GRY/BLK WIRE HVAC AMBIENT AIR TEMPERATURE SENSOR HVAC CONTROL MODULE INTERIOR LIGHTS SYSTEM POWER DISTRIBUTION SYSTEM 6817 300 1851 3340 5060 LEFT TEMPERATURE CONTROL LOW REF LT BLU WIRE LT GRN/BLK WIRE MODE SELECT SWITCH MODE SIG MTR SIG ORG/ WIRE PNK SW SIG MODE SIG TEMP SIG WIRE PNK WIRE PPL PPL/WHT WIRE REAR DEFOGGER IND REAR DEFOGGER SWITCH RECIRCU- LATION IND RECIRCU- LATION SWITCH RED WIRE RED/WHT WIRE RER DEFG AIR TMP GROUND RIGHT I/P JUNCTION BLOCK (RIGHT END OF DASH) RIGHT TEMPERATURE CONTROL SPD CTRL TAN WIRE TEMPERATURE CONTROL SWITCH WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

21 22 SENS SIG LOW REF A/C CMPRSR FUSE 17 A/C CMPRSR RELAY AUX HVAC-IGN FUSE 48 BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (FRONT OF LEFT CYLINDER HEAD) GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT W/ PWR/TRN RELAY ENERGIZED HVAC BATT FUSE 39 HVAC BLWR FUSE 70 HVAC-IGN FUSE 55 LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE ORG/BLK WIRE PNK WIRE PPL/WHT WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (RIGHT END OF DASH) RUN/ CRANK RELAY TAN WIRE TAN/BLK WIRE UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ HEATED STEERING WHEEL WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE FAN CNTRL RELAY FAN HI RELAY FAN LO RELAY FAN-1 FUSE 57 FAN-2 FUSE 60 GRY WIRE GRY/WHT WIRE HOT AT ALL TIMES LEFT AIR TEMPERATURE ACTUATOR (UNDER LEFT SIDE OF HVAC MODULE) LEFT ENGINE COOLING FAN (BEHIND RADIATOR) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MODE ACTUATOR (LEFT SIDE OF HVAC MODULE) ORG/BLK WIRE PNK WIRE PWR/ TRN RELAY RECIRCULATION ACTUATOR (UPPER RIGHT OF HVAC MODULE) RIGHT AIR TEMPERATURE ACTUATOR (TOP OF HVAC MODULE) RIGHT ENGINE COOLING FAN (BEHIND RADIATOR) TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT/BLK WIRE YEL WIRE

3 4 5 6 7 8 9 10 11 12 13 14 15 16 MDE CNTRL TEMP CNTRL LOW REF AUXILIARY AIR TEMPERATURE ACTUATOR (REAR HVAC MODULE ASSEMBLY) AUXILIARY BLOWER MOTOR CONTROL MODULE AUXILIARY MODE ACTUATOR (REAR HVAC MODULE) BLK WIRE BLOWER SPEED BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DOWN GRY WIRE GRY/BLK (OR YEL) WIRE GRY/BLK WIRE HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK LOGIC LONG WHEEL BASE LOW REF MODE SWITCH MTR CNTRL ORG/ WIRE PNK PNK WIRE PNK WIRE REAR HVAC FUSE (LEFT END OF DASH) REAR SEAT AUDIO (RSA) CONTROL RED/WHT WIRE SHORT WHEEL BASE SPD CTRL TEMPERATURE CONTROL UP GMLAN WHT WIRE YEL WIRE YEL/BLK WIRE