GMC Acadia I facelift (2013-2016) headlights system Wiring diagrams

16 17 GMLAN + GMLAN - 22 21 6 LOW REF 24 8 LOW REF ECT 2500 2501 COMPUTER DATA LINES SYSTEM A/C CLUTCH A/C PRESSURE A/C REFRIGERANT PRESSURE SENSOR A/C REFRIGERANT PRESSURE SENSOR (NEAR REAR OF A/C COMPRESSOR) AMBI AIR TEMP SENS SIG AMBI AIR TEMP SENS SIG LOW SPEED GMLAN AMBIENT AIR TEMPERATURE SENSOR AUX MODE DOOR CTRL BLK WIRE BLK/WHT WIRE BLOWER SPEED DOWN BLOWER SPEED UP BODY CONTROL MODULE (BCM) BODY CONTROL MODULE (BCM) (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DEFOGGER SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER SENSOR DRIVER TEMP DOWN DRIVER TEMP UP DRL SENSOR DRV SUNLOAD SENS SIG ECT ELECTRIC VARIABLE DISPLACEMENT CTRL ENGINE CONTROL MODULE (ECM) ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE) ENGINE COOLANT TEMPERATURE (ECT) SENSOR ENGINE COOLANT TEMPERATURE (ECT) SENSOR (LEFT SIDE OF ENGINE) GMLAN GND POWER MODE GRN WIRE GRY WIRE HEADLIGHTS SYSTEM HI SPD BUS- HI SPD CLG FAN HOT AT ALL TIMES HVAC CONTROL MODULE HVAC FUSE I/P FUSE BLOCK I/P FUSE BLOCK (BEHIND RIGHT END OF DASH) IN AIR TEMP SENS SIG IN AIR TEMP SENS SIG PASS SUNLOAD SENS SIG INSIDE AIR TEMPERATURE SENSOR LO SPD CLG FAN LOGIC LOGIC HVAC CONTROL MODULE LOW REF LOW SPEED GMLAN LT BLU/BLK WIRE LT GRN/BLK WIRE MODE DOWN MODE UP ORG/ WIRE ORG/BLK WIRE PASS SUNLOAD SENS SIG PASSENGER SENSOR PNK 3 4 WIRE PNK WIRE POWER MODE PPL REAR DEFOG REAR WINDOW DEFROST ELECTRIC VARIABLE SWITCH DISPLACEMENT COMPRESSOR SPLY RED/WHT WIRE RIGHT AIR TEMP SW SIG SUNLOAD SENSOR SUNLOAD SENSOR (UNDER CENTER OF DASH, NEAR WINDSHIELD DEFROST VENT) TAN WIRE TAN/BLK WIRE UPPER LEFT AIR TEMPERATURE SENSOR UPPER LEFT AIR TEMPERATURE SENSOR (FRONT LEFT END OF HVAC MODULE) UPPER LEFT TEMP SENS SIG UPPER RIGHT AIR TEMPERATURE SENSOR UPPER RIGHT AIR TEMPERATURE SENSOR (FRONT RIGHT END OF HVAC MODULE) UPPER RIGHT TEMP SENS SIG WHT WIRE YEL WIRE

12 VOLTS REFERENCE 1970 1080 HEADLAMP LOW BEAM RLY CTRL PARK LAMP RELAY CONTROL 746 245 745 RF DOOR AJAR SW SIG PASS DOOR LOCK SW UNLOCK 748 747 RR DOOR AJAR SW SIG LEFT REAR DOOR AJAR SW SIG 91 860 WINDSHIELD WPR SW SIG 2 FRT WINDSHIELD WP SW HI SIG AIR CONDITIONING SYSTEM AIR CONDITIONING SYSTEM WIPER/WASHER SYSTEMS ANTI-THEFT SYSTEM ANTI-THEFT SYSTEM INSTRUMENT CLUSTER SYSTEM EXTERIOR LIGHTS SYSTEM HORNS SYSTEM BACKUP LMP VOLTAGE BODY CONTROL MODULE (BCM) (UNDER LEFT SIDE OF DASH) BRN WIRE CRUISE CONTROL SYSTEM CRUISE CONTROL, TRANSMISSIONS, SOUND SYSTEMS CRUISE CTRL SWITCH SIGNAL CURRENT SENS VOLT CURRENT SENSOR SIGNAL DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM HEADLIGHTS SYSTEM DOOR LOCKS SYSTEM DRL SUPPLY VOLTAGE DRV DR LCK SW LCK SIG DRV DR LCK SW UNLCK SIG DRV DR LCK SW UNLCK SIG DRV DR LCK SW LCK SIG DRV DR UNLOCK RLY CTRL EXTERIOR LIGHTS SYSTEM INTERIOR LIGHTS SYSTEM FLASH TO PASS SW SIG FRT WINDSHIELD WP SW HI SIG GRY WIRE GRY/BLK WIRE HANDLE SW OPEN SIG HAZARD SWITCH SIGNAL HEAD LP DIM SW HI BM SIG HEADLAMP LOW BEAM RLY CTRL HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEATED SEAT IND DIMMING HOOD CLOSED SWITCH SIGNAL HORN RELAY CONTROL HORNS SYSTEM HOT AT ALL TIMES IGN II/III/KEY IN IGNITION IGN KEY RESISTOR SIG IGNITION SWITCH IGNITION VOLTAGE INSTRUMENT CLUSTER SYSTEM EXTERIOR LIGHTS SYSTEM INSTRUMENT PNL LP VOLT KEY-IN IGNITION SWITCH L TURN SIG LMP VOLT LED DIMMING SIGNAL LEFT FRONT DOOR AJAR SW SIG LEFT REAR DOOR AJAR SW SIG LEFT TURN SWITCH SIGNAL LH TAIL LP OUTAGE DETECT SIG LH TAIL LP OUTAGE DETECT SIG HORN RELAY CONTROL LIFTGATE AJAR SW SIG LIFTGATE RELAY HIGH CNTRL LOW REF LOW REFERENCE LOW REFERENCE WINDSHIELD WPR SW LO SIG LR STOP/TURN SIG LMP VOLT LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MASTER SW LOCKOUT RR SIG MASTER SW LOCKOUT SIG MASTER SW LR DN SIG MASTER SW LR UP SIG MASTER SW RR DN SIG MASTER SW RR UP SIG MASTER SW RR UP SIG MASTER SW LR DN SIG PPL OFF ORG/ WIRE ORG/BLK WIRE PARK BRAKE SWITCH SIGNAL PARK LAMP RELAY CONTROL PASS DOOR LOCK SW LOCK PASS DOOR LOCK SW UNLOCK PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM POWER DISTRIBUTION SYSTEM EXTERIOR LIGHTS SYSTEM POWER MODE POWER WINDOWS SYSTEM PPL PPL PPL PPL/WHT WIRE REAR WPR/WSR SW SPLY VOLT REMOTE RADIO CNTRL SIG RF DOOR AJAR SW SIG RIGHT TURN SWITCH SIGNAL RR DOOR AJAR SW SIG RR STOP/TURN SIG LMP VOLT RUN WIRE SEATS SYSTEM SOUND SYSTEMS STARTING/CHARGING SYSTEM STEERING WHEEL CNTRL SIG STOP LAMP VOLTAGE STOP LP RLY STOP LP VOLT (OR IGN VOLT) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TAP UP/TAP DN SIG TOW/HAUL SWITCH SIGNAL TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM WHT WIRE WHT/BLK WIRE WINDSHIELD WPR SW HI SIG WINDSHIELD WPR SW LO SIG WINDSHIELD WPR SW SIG 2 WINDSHIELD WSH SW SIG WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM SOUND SYSTEMS WIPER/WASHER SYSTEMS YEL WIRE YEL/BLK WIRE

12 VOLT REFERENCE A/T SHIFT LCK CTRL VOLT ANTI-LOCK BRAKES SYSTEM ANTI-THEFT SYSTEM BATTERY BATTERY POSITIVE VOLTAGE BCK/UP/ STOP FUSE BCM FUSE BLK WIRE BLK/WHT WIRE BRK LP SNSR SIG BRN WIRE BRN/WHT WIRE COMMUNICATION ENABLE COMPUTER DATA LINES SYSTEM COURTESY LAMP HIGH CNTRL COURTESY LAMPS SW ON SIG COURTESY LAMPS VOLT CRUISE CONTROL SYSTEM CRUISE CTRL IND DIM SIG CTSY FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRL AMBIENT LIGHT SENS SIG DRL AMBIENT LIGHT SENS SIG HEADLAMPS ON SIGNAL ENGINE CONTROLS SYSTEM EXTERIOR LIGHTS SYSTEM ANTI-LOCK BRAKES SYSTEM SHIFT INTERLOCK SYSTEM EXTERIOR LIGHTS SYSTEM INSTRUMENT CLUSTER SYSTEM EXTERIOR LIGHTS SYSTEM INSTRUMENT CLUSTER SYSTEM WIPER/WASHER SYSTEM FOG LAMP RELAY CONTROL FOG LAMPS ENABLE FOG LAMPS ENABLE CRUISE CTRL IND DIM SIG LED AMB LT CTRL 2 GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE HEADLAMP LO BEAM VOLT HEADLAMP RLY CTRL HEADLAMPS OFF SIGNAL HEADLAMPS OFF SIGNAL COURTESY LAMPS SW ON SIG HEADLAMPS ON SIGNAL HEADLIGHTS SYSTEM HEADLIGHTS SYSTEM CRUISE CONTROL SYSTEM INTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM INTERIOR LIGHTS SYSTEM HIGH SPD SER DATA BUS - HOOD AJAR SWITCH SIG HOT AT ALL TIMES HOT AT ALL TIMES BCK/UP/ STOP FUSE HOT AT ALL TIMES INADV/ PWR/LED FUSE HOT AT ALL TIMES LT/TRN/ SIG FUSE HOT AT ALL TIMES RT/TRN/ SIG FUSE HVAC FUSE I/P FUSE BLOCK I/P FUSE BLOCK (BEHIND RIGHT END OF DASH) IGNITION VOLTAGE INADV/ PWR/LED FUSE INSTRUMENT DIM PNL SW SIG INSTRUMENT PNL VOLT INTERIOR LAMP SW SIG INTERIOR LIGHTS SYSTEM COMPUTER DATA LINES SYSTEM LED AMB LT CTRL 2 LED DIMMING SIG LH TRAILER TURN SIG LAMP LIFTGATE RLY COIL CTRL LIN BUS LOW REFERENCE LOW SPD GMLAN SER DATA LT BLU WIRE LT GRN/BLK WIRE LT/TRN/ SIG FUSE ORG/ WIRE ORG/WHT WIRE PNK IGNITION VOLTAGE LIFTGATE RLY COIL CTRL HEADLAMP LO BEAM VOLT WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL INTERIOR LAMP SW SIG PPL/WHT WIRE REAR PARK LAMPS VOLT RED WIRE RED/WHT WIRE RF TURN SIG IND LAMP VOLT RH TAIL LP OUTAGE DETECT SIG RH TRAILER TURN SIG LAMP RT/TRN/ SIG FUSE RVC SNSR FUSE SHIFT INTERLOCK SYSTEM SPLY VOLT TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CTRL SWITCH SIG TRUNK, TAILGATE, FUEL DOORS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM HEADLIGHTS SYSTEM UNDERHOOD FUSE BLOCK WHT WIRE WINDSHIELD WASHER RLY CTRL WINDSHIELD WASHER RLY CTRL HEADLAMP RLY CTRL HOOD AJAR SWITCH SIG WIPER MTR PARK SW SIG WIPER/WASHER SYSTEM WIPER/WASHER SYSTEM HEADLIGHTS SYSTEM YEL WIRE