GMC Yukon II (1999-2006) underhood fuse block (left side of engine compt, near battery) Wiring diagrams

A/C COMP CL RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C LOW PRESSURE SWITCH (RIGHT SIDE OF ACCUMULATOR) A/C ON A/C RECIRC A/C REF PRE SENS SIG A/C REFRIGERANT PRESSURE SENSOR (IN HIGH SIDE PRESSURE LINE) AMBIENT AIR TEMPERATURE SENSOR (IN RIGHT FRONT BUMPER FILLER ASSEMBLY AUTO BLK WIRE BLK/WHT WIRE BLOWER FUSE BLOWER MOTOR (RIGHT SIDE OF DASH) BLOWER MOTOR CONTROL PROCESSOR (BEHIND RIGHT SIDE OF DASH) BRN WIRE BRN/WHT WIRE CLASS 2 SER DATA CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FAN DN FAN UP FRT DEF GROUND GROUND TEMP SEN ASS CTRL BLOWER SPEED CTRL GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT AT ALL TIMES A/C COMP FUSE HOT IN HOT IN RUN OR START IGN E FUSE HVAC 1 FUSE HVAC CONTROL MODULE (BEHIND CENTER OF DASH) HVAC/ ECAS FUSE I/P RELAY BLOCK (LEFT SIDE OF DASH) INSIDE AIR TEMPERATURE SENSOR ASSEMBLY (IN HEADLINER ABOVE DRIVER) INST LAMP DIM CTRL GROUND LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT TEMP CONTROL LO PRESS SENS SIG RT TEMP DOOR CTRL LT TEMP DOOR CTRL LOGIC LOW REF LOWER LEFT AIR TEMPERATURE SENSOR (LEFT END OF HVAC MODULE) LOWER RIGHT AIR TEMPERATURE SENSOR (BOTTOM OF HVAC MODULE) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE MODE DOOR CTRL MODE DOOR CTRL IGN 3 LOW REF B(+) OFF ORG/ WIRE POWERTRAIN CONTROL MODULE OR ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL/WHT WIRE RECIR RECIR DOOR CTRL RT TEMP DOOR CTRL LT TEMP DOOR CTRL RED WIRE RED/BLK WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT TEMP CONTROL RUN WIRE SPEED CTRL B(+) GROUND TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UPPER LEFT AIR TEMPERATURE SENSOR (BELOW DASH TRIM PANEL) UPPER RIGHT AIR TEMPERATURE SENSOR (BELOW DASH TRIM PANEL) WHT WIRE WHT/BLK WIRE YEL WIRE

AIR TEMP DOOR SIG MODE DOOR SIG AUXILIARY AIR TEMPERATURE ACTUATOR (ON AUXILIARY HVAC MODULE ASSEMBLY) AUXILIARY BLOWER MOTOR CONTROL PROCESSOR (BELOW AUXILIARY BLOWER MOTOR) AUXILIARY HVAC CONTROL MODULE (RIGHT REAR OF VEHICLE) AUXILIARY MODE ACTUATOR (ON AUXILIARY HVAC MODULE ASSEMBLY) AUXILIARYBLOWER MOTOR B(+) CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BLOWER CONTROL BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK/BLU WIRE ECC FUSE FRONT AUXILIARY HVAC CONTROL ASSEMBLY FT BLOW MT SW CTRL FT MODE SW SIG GROUND GROUND AIR TEMP DOOR CTRL FT MODE SW SIG B(+) CLASS 2 SER DATA GROUND GROUND LO AIR TEMP SEN SIG BLOWER MT SP CTRL GROUND GROUND LOW REF GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN I/P RELAY BLOCK (LOWER LEFT SIDE OF DASH) IGN 3 FUSE INSIDE AIR TEMP CTRL FT BLOWER MT SW SIG LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LOW REF LOWER AUXILIARY AIR TEMPERATURE SENSOR (BEHIND RIGHT "C" PILLAR, FRONT OF HVAC) LT BLU WIRE ORG/ WIRE PANEL LP DIM CTRL FT AIR TEMP SW SIG POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE RADIO FUSE REAR SEAT AUDIO (RSA) CONTROLLER RR HVAC FUSE RUN WIRE SPEED CTRL B(+) GROUND TAN WIRE TEMP CONTROL UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

A/C COMP CL RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C LOW PRESSURE SWITCH (RIGHT SIDE OF ACCUMULATOR) A/C ON SWITCH A/C REF PRE SENS SIG A/C REFRIGERANT PRESSURE SENSOR (IN HIGH SIDE PRESSURE LINE) BLK WIRE CLASS 2 SER DATA LO PRESS SENS SIG CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE GRY WIRE HOT AT ALL TIMES A/C COMP FUSE HOT IN RUN OR START IGN E FUSE HVAC CONTROL MODULE (BEHIND CENTER OF DASH) LOGIC LOW REF POWERTRAIN CONTROL MODULE OR ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) RED WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE

5.3L FLEX FUEL A/C COMPRESSOR CLUTCH A/C LOW PRESSURE SWITCH ACTIVE TRANSFER CASE AUXILIARY POWER CENTER (FUSE/ RELAY BLOCK) RELAY B BATTERY (LEFT) BATTERY (RIGHT) BLK WIRE BLUNT CUT) BRAKE FLUID LEVEL SWITCH BRAKE PRESSURE DIFFERENTIAL SWITCH CADILLAC EXCEPT CADILLAC COOLANT LEVEL SWITCH DAYTIME RUNNING HORN LAMP (DRL) (RIGHT) (RIGHT) DAYTIME RUNNING LAMP (DRL) (LEFT) ELECTRONIC BRAKE CONTROL MODULE F/PMP RELAY FOG LAMP (LEFT) FOG LOW BEAM LAMP HEADLAMP (RIGHT) (RIGHT) FRONT AXLE ACTUATOR FUEL COMPOSITION SENSOR FUEL PUMP, SENDER ASSEMBLY (PRIMARY) FUEL PUMP, SENDER ASSEMBLY (SECONDARY) FUSE FUSE HEADLAMP BALLAST (LEFT) HEADLAMP HIGH BEAM (LEFT) HIGH BEAM HEADLAMP (LEFT) HIGH BEAM HEADLAMP (RIGHT) HIGH BEAM HEADLAMP (RIGHT) HEADLAMP BALLAST (RIGHT) HORN (LEFT) IGN 1 RELAY INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE LOW BEAM HEADLAMP (LEFT) NCA WIRE PARK/TURN SIGNAL LAMP (LEFT FRONT) PARK/TURN SIGNAL LAMP (RIGHT FRONT) REAR WHEEL STEERING CONTROL MODULE REAR WINDOW WASHER FLUID PUMP RELAY A THROTTLE ACTUATOR CONTROL MODULE TRANSFER CASE SHIFT CONTROL MODULE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UPFITTER OPTION W/ DUAL HORNS W/ HID W/DUAL BATTERY W/HID W/O HID W/O VSES W/VSES WASHER FLUID LEVEL SWITCH WINDSHIELD WASHER FLUID PUMP

ABS IND. AIR BAG IND ANALOG CLOCK BATTERY GROUND BATTERY IND BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BRAKE IND BRN WIRE BRN/WHT WIRE CARGO LAMP IND CLASS 2 DATA COMPUTER DATA LINES COOLANT TEMP GAUGE CRUISE IND DIC MODE SW DIC TOGGLE SW DIC SW SIG DIC FUEL SIG DK BLU WIRE DK GRN/WHT WIRE EXCEPT SEO EXCEPT SEO SEO FUEL GAUGE FUSE GRY WIRE HIGH BEAM IND HOT AT ALL TIMES HOT IN RUN OR START I/P DIM I/P RELAY BLOCK IGN E FUSE IGNITION IGNITION CLASS 2 DATA ILLUMINATION INSTRUMENT PANEL CLUSTER IPC SERIAL DATA IPC/DIC FUSE LAMP LEFT TURN LEFT TURN IND LO WASH FLUID VSS ENG SPEED SIG LOW FUEL IND LT BLU WIRE MESSAGE DISPLAY VARIABLE DIMMING MIL CNTRL OIL GAUGE ORG/ WIRE ORN/ OVERDRIVE OFF IND PNK WIRE RADIO FUSE RED WIRE RIGHT TURN IND RIGHT TURN SUPPL. BRAKE SEAT BELT IND SECURITY IND SEO SEO IGN FUSE SOON IND (MIL) SERVICE ENGINE SPEEDOMETER TACHOMETER TIRE PRESSURE IND TOW/HAUL IND TRACTION CONTROL IND TRANSMISSION TEMP GAUGE TRIP ODOMETER HOUR METER TRIP RESET UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VOLTS GAUGE WASHER FLUID LEVEL SENSOR (IN WASHER FLUID RESERVOIR) WHT WIRE YEL WIRE

A/C COMP CL RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C LOW PRESSURE SWITCH (RIGHT SIDE OF ACCUMULATOR) A/C ON SWITCH A/C RECIRC A/C REF PRE SENS SIG A/C REFRIGERANT PRESSURE SENSOR (IN HIGH SIDE PRESSURE LINE) BLK WIRE BLK/WHT WIRE BLOWER FUSE BLOWER MOTOR (UNDER RIGHT SIDE OF DASH) BLOWER MOTOR CONTROL SWITCH BLOWER MOTOR RELAY BLOWER MOTOR RESISTOR ASSEMBLY (ON HVAC MODULE, NEAR BLOWER MOTOR) BRN WIRE BRN/WHT WIRE CLASS 2 SER DATA CLASS 2 SERIAL DATA DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FRT DEF GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES A/C COMP FUSE HOT IN HOT IN RUN OR START IGN E FUSE HTR A/C FUSE HVAC 1 FUSE HVAC CONTROL MODULE (BEHIND CENTER OF DASH) HVAC/ ECAS FUSE I/P RELAY BLOCK (LEFT SIDE OF DASH) INST LAMP DIM CTRL GROUND LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT TEMP CONTROL LOGIC LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MODE CONTROL MODE DOOR CTRL MODE DOOR CTRL IGN 3 LOW REF B(+) OFF OFF BLOW MT CTRL LO PRESS SENS SIG RT TEMP DOOR CTRL LT TEMP DOOR CTRL ORG/ WIRE POWERTRAIN CONTROL MODULE OR ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL RECIR DOOR CTRL RT TEMP DOOR CTRL LT TEMP DOOR CTRL RECIRC SWITCH RED WIRE RED/BLK WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT TEMP CONTROL RUN WIRE TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE WHT/BLK WIRE YEL WIRE

AUXILIARY BLOWER MOTOR (BEHIND RIGHT REAR QUARTERPANEL) AUXILIARY HEATER BLOWER MOTOR RESISTOR AUXILIARY HIGH SPEED BLOWER MOTOR RELAY AUXILIARY LOW SPEED BLOWER MOTOR RELAY AUXILIARY MED SPEED BLOWER MOTOR RELAY BLK WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE FAN COM FRONT AUXILIARY HVAC CONTROL ASSEMBLY HOT AT ALL TIMES HOT IN RUN LEFT I/P FUSE BLOCK (LEFT SIDE OF DASH) IGN 3 FUSE LOW MED HIGH MED OFF OFF REAR CTRL ORG/ WIRE REAR AUXILIARY HVAC CONTROL ASSEMBLY LOW REAR CTRL RED WIRE RR HVAC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE

AUXILIARY AIR TEMPERATURE ACTUATOR (ON AUXILIARY HVAC MODULE ASSEMBLY) AUXILIARY BLOWER MOTOR (BEHIND RIGHT REAR QUARTERPANEL) AUXILIARY HEATER BLOWER MOTOR RESISTOR AUXILIARY HIGH SPEED BLOWER MOTOR RELAY AUXILIARY HVAC CONTROL PROCESSOR (CENTER OF HEADLINER) AUXILIARY LOW SPEED BLOWER MOTOR RELAY AUXILIARY MED SPEED BLOWER MOTOR RELAY AUXILIARY MODE ACTUATOR (ON AUXILIARY HVAC MODULE ASSEMBLY) BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE FAN COM FRONT AUXILIARY HVAC CONTROL ASSEMBLY FT MODE SIG FT TEMP SIG GROUND IGN 3 VOLTAGE GRY WIRE HIGH REAR MODE SIG REAR TEMP SIG HOT AT ALL TIMES HOT IN RUN LEFT I/P FUSE BLOCK (LEFT SIDE OF DASH) IGN 3 FUSE IGN 3 VOLT LOGIC LOW MED HIGH LT BLU WIRE MED OFF OFF REAR CTRL ORG/ WIRE REAR AUXILIARY HVAC CONTROL ASSEMBLY LOW REAR CTRL REAR ENABLE CTRL RED WIRE RED/BLK WIRE RR HVAC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE WHT/ DK BLU WIRE WHT/BLK WIRE

5.3L W/DUAL BATTERY ABS FUSE ANALOG CLOCK AUDIO AMPLIFIER AUTOMATIC LEVEL CONTROL RELAY AUXILIARY POWER CENTER FUSE/ RELAY BLOCK BATTERY (LEFT) BATTERY (RIGHT) BLK WIRE BLUNT CUT) BODY CONTROL MODULE BRN WIRE CIG LTR FUSE CIGAR LIGHTER CLIMATE CONTROL SEAT MODULE (DRIVER) CLIMATE CONTROL SEAT MODULE (FRONT PASSENGER) CLIMATE CONTROL SEAT MODULE (RIGHT REAR) CLIMATE CONTROL SEAT MODULE (LEFT REAR) DATA LINK CONNECTOR DIGITAL RADIO RECEIVER RADIO REAR SEAT AUDIO (RSA) CONTROLLER DIGITAL RADIO RECEIVER REAR SEAT AUDIO (RSA) CONTROLLER DK BLU WIRE DRIVER FUSE ELECTRONIC BRAKE CONTROL MODULE ELECTRONIC BRAKE CONTROL MODULE ELECTRONIC SUSPENSION CONTROL MODULE EVAPORATIVE EMISSIONS CANISTER VENT SOLENOID EXCEPT LUXURY FRONT PASS FUSE FUSE FUSE HOLDER FUSIBLE LINK GENERATOR HEATED/ COOLED SEATS FUSE BLOCK LEFT REAR FUSE I/P RELAY BLOCK (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) IGN A FUSE LT BLU WIRE LUXURY MEGA FUSE MOBILE RADIO (UPFITTER OPTION) NCA WIRE ORG/ WIRE PPL PPL PPL RADIO RADIO AMP FUSE RADIO FUSE REAR WHEEL STEERING CONTROL MODULE RED WIRE RELAY B RELAY A RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT REAR FUSE RR WIPER FUSE SUNROOF FUSE EAP FUSE RTD FUSE STARTER STARTER RELAY STUD 1 FUSE IGN B FUSE STUD 2 FUSE TAN WIRE TBC BATT FUSE TO IGNITION SWITCH (DIAGRAM 5 OF 6) TO IGNITION SWITCH (DIAGRAM 6 OF 6) TO IPC/DIC FUSE (DIAGRAM 2 OF 6) TRAILER CONNECTOR TRAILER TOW (BLUNT CUT) ULT UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) UNDERHOOD JUNCTION BLOCK VSES/ ECAS FUSE W/ VSES W/O VSES WHT WIRE YEL WIRE

AUX PWR FUSE RR HVAC FUSE AUXILIARY POWER OUTLET (BIN) AUXILIARY POWER OUTLET (FRONT) AUXILIARY POWER OUTLET (CONSOLE) BLK WIRE BLOWER FUSE BLOWER MOTOR RESISTOR ASSEMBLY DEFOG RELAY EXC SEO EXCEPT LUXURY F/PMP RELAY FROM SUNROOF FUSE (DIAGRAM 1 OF 6) FUSE GARAGE DOOR OPENER HEADLAMP BALLAST (LEFT) HEADLAMP BALLAST (RIGHT) HVAC CONTROL ASSEMBLY (REAR AUXILIARY) HVAC CONTROL MODULE HVAC/ECAS FUSE I/P RELAY BLOCK (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) INFO FUSE INSTRUMENT PANEL CLUSTER IPC/DIC FUSE LH HID FUSE LUXURY ORG/ WIRE OVERHEAD CONSOLE PCM B FUSE POWERTRAIN CONTROL MODULE REAR SEAT ENTERTAINMENT ASSEMBLY RED WIRE RH HID FUSE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) ROOF BEACON RELAY (UPFITTER OPTION) ROOF BEACON SWITCH (UPFITTER OPTION) RR DEFOG FUSE SEO STOP LP FUSE STOPLAMP SWITCH TO LBEC 1 FUSE (DIAGRAM 3 OF 6) TRANSFER CASE ENCODER MOTOR TRANSFER CASE SHIFT CONTROL MODULE TREC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VEHICLE COMMUNICATION INTERFACE MODULE VEHICLE COMMUNICATION INTERFACE MODULE REMOTE PLAYBACK DEVICE (CD PLAYER) W/ADJUSTABLE PEDALS W/O ADJUSTABLE PEDALS