Hummer H3 I (2005-2010) underhood fuse block (above left front wheelwell) Wiring diagrams

-MTR FUSE 67 -SOL FUSE 64 1764 1763 STEERING SIG B STEERING SIG A 1765 463 464 716 STEERING POS SIG REQ TORQ SIG DLVRD TORQ SIG CAN H 2340 850 BATT + GRD 39 40 1059 1835 STEERING POS SIG 833 830 883 884 RF SPD LOW REF LF SPD SIG RR SPD LOW REF LR SPD SIG ABS/VSES FUSE 29 BKUP VOLT BLK WIRE BLU WIRE BRAKE FLUID LEVEL SWITCH (ON LEFT SIDE OF BRAKE FLUID RESERVOIR) BRAKE PRESSURE MODULATOR VALVE (BPMV) BRN WIRE CAN L DK BLU WIRE DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (LEFT OF MASTER CYLINDER) GRY WIRE HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED LEFT FRONT WHEEL SPEED SENSOR (WSS) (ATTACHED TO LEFT FRONT WHEEL HUB) LEFT REAR WHEEL SPEED SENSOR (WSS) (ATTACHED TO LEFT SIDE OF REAR AXLE) LOW REF LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK 1439 540 IGN 1 VOLT BATT + WIRE PNK BRK FLD SIG WIRE PNK WIRE PPL PPL SERIAL CLASS 2 STOP LP VOLT IGN 3 VOLT RED WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ATTACHED TO RIGHT FRONT WHEEL HUB) RIGHT REAR WHEEL SPEED SENSOR (WSS) (ATTACHED TO RIGHT SIDE OF REAR AXLE) STOP FUSE 54 STOP LAMP SWITCH (ABOVE BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) WHT WIRE YEL WIRE

ABS IND. ACCESSORY SWITCH BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT FRONT KICK PANEL) BRAKE IND BRN WIRE BRN/WHT WIRE CAN L CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL CLASS CLASS 2 (EBCM) 2 (EBCM) DELIVERED TORQUE SIGNAL DK BLU WIRE DRIVER INFO CENTER INSTRUMENT PANEL CLUSTER (IPC) ENGINE CONTROL MODULE (ECM) (RIGHT REAR CORNER OF ENGINE COMPT) GRY WIRE HOT W/ HVAC RELAY ENERGIZED IGN IGN 3 VOLT LOGIC LT BLU WIRE LT GRN WIRE ORG/BLK WIRE PARK BRAKE SWITCH PARK BRK SW SIG PPL PPL CLASS 2 SERIAL DATA PPL DATA LINK CONNECTOR (DLC) (LEFT SIDE OF DASH) PULSE SIG STEERING REQUESTED TORQUE SIGNAL SIG A STEERING STABILITY CAUTION IND STEERING SIG B STOP LP VOLT TAN/BLK WIRE TRAC CTRL SW SIG TRACTION CONTROL SWITCH UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) VSES/ABS FUSE 52 WHT WIRE YAW, LATERAL ACCELEROMETER SENSOR (W/ ACTIVE BRAKE CONTROL) (UNDER DRIVER

AIR CONDITIONING SYSTEM BCM FUSE 14 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT FRONT KICK PANEL) BRN WIRE BRN/WHT WIRE DEFOGGER SYSTEM DOOR LOCKS SYSTEM DOOR LOCKS SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FOG LAMP RLY CTRL LEFT TRN SIG LAMP CTRL FRT TRN/HAZRD/ CTSY MIR FUSE 56 FUSE 20 GRY/BLK WIRE HEADLAMP RLY CTRL RAP RLY COIL CTRL BATTERY + WIPER SW SIG 2 HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM EXTERIOR LIGHTS SYSTEM WIPER/WASHER SYSTEM HEADLIGHTS SYSTEM POWER DISTRIBUTION SYSTEM HI BEAM RLY CTRL RIGHT TRN SIG LAMP CTRL WIPER MTR PRK SW SIG HOT AT ALL TIMES IGN RLY CTRL INADVERTENT PWR CTRL INADVERTENT PWR CTRL PARK BRAKE SW SIG LF DOOR AJAR SW SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE ORG/ WIRE PARK LAMP RLY CTRL PNK/WHT WIRE PPL PPL REAR DEFOG RLY CTRL PASS DR LOCK SW LOCK CTRL DOOR UNLOCK CTRL REAR TRN/ HAZRD RED WIRE RED/BLK WIRE STARTING/CHARGING SYSTEM ENGINE CONTROLS SYSTEM UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) WHT WIRE WIPER/WASHER SYSTEM YEL WIRE

1807 1807 PPL PPL SERIAL DATA SERIAL DATA A/C REQ SIG 53 15 RLY CTRL SERIAL DATA PPL 57 37 21 PRESS SENS SIG A/C CLUTCH DIODE 90 A/C CLUTCH RELAY 76 A/C COMPRESSOR CLUTCH (PART OF A/C COMPRESSOR) A/C ON IND LOW REF A/C ON SWITCH EVAP TEMP SIG A/C REFRIGERANT PRESSURE SENSOR (ON HIGH PRESSURE HOSE CONNECTION TO COMPRESSOR) A/C REQ SIG AC CLUTCH FUSE 48 BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT FRONT KICK PANEL) COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (RIGHT REAR CORNER OF ENGINE COMPT) EVAPORATOR TEMPERATURE SENSOR (BEHIND RIGHT LOWER DASH) GRY WIRE HOT AT ALL TIMES HOT W/ RUN/ CRANK RELAY 78 ENERGIZED HVAC CONTROL MODULE (BENEATH RADIO) LOGIC LOW REF MANUAL A/C CIRCUIT PPL RED/BLK WIRE UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) YEL WIRE

15 16 PPL PPL CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA 53 33 HI SPD SERIAL DATA BUS + HI SPD SERIAL DATA BUS - A/T AUX PWR 1 FUSE 51 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT FRONT KICK PANEL) CIGAR LIGHTER DATA LINK CONNECTOR (DLC) (LEFT SIDE OF DASH) DATA LINK RESISTOR DIGITAL RADIO RECEIVER (RIGHT SIDE OF DASH) ELECTRONIC BRAKE CONTROL MODULE (EBCM) (LEFT OF MASTER CYLINDER) ENGINE CONTROL MODULE (ECM) (RIGHT REAR CORNER OF ENGINE COMPT) GENERATOR BATTERY CONTROL MODULE (LEFT FRONT OF ENGINE COMPT, NEAR BATTERY) HOT AT ALL TIMES INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) (BENEATH LOWER CONSOLE) INSTRUMENT PANEL CLUSTER (IPC) M/T ORG/ WIRE PPL PPL CLASS 2 SERIAL DATA PPL PPL 11 10 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA PPL PPL 1807 1807 CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA RADIO TAN WIRE TAN/WHT WIRE THEFT DETERRENT MODULE (TDM) TRANSFER CASE SHIFT CONTROL MODULE (BEHIND GLOVE BOX) TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL)

1 10 11 4 PPL PPL 5 VOLT REFERENCE 2 6 7 38 37 GMLAN HI (+) GMLAN HI (-) GMLAN HI (+) GMLAN HI (-) 66 67 VSS HIGH SIGNAL VSS LOW SIGNAL 7 29 2 STOP LAMP CONTROL CRUISE CONTROL SWITCH CRUISE CONTROL RELEASE SIGNAL A/T ACCELERATOR PEDAL POSITION (APP) SENSOR (ON ACCELERATOR PEDAL BRACKET) B+ CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA GND BLK WIRE BLK/WHT WIRE BRN WIRE CLSTR FUSE 19 COMPUTER DATA LINES SYSTEM CRUISE CONTROL ON/OFF SWITCH CRUISE CONTROL RELEASE SWITCH CRUISE INDICATOR CRUISE/MISC FUSE 35 DK BLU WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (RIGHT REAR OF ENGINE COMPARTMENT) GRY WIRE HOT AT ALL TIMES HOT W/ RUN/ CRANK RELAY ENERGIZED LOGIC LOGIC INSTRUMENT PANEL CLUSTER (IPC) LOW REFERENCE LT BLU WIRE LT GRN/BLK WIRE M/T MOUNTED ON UPPER AIR INTAKE MANIFOLD) ON OFF ORG/ WIRE PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL CLASS 2 SERIAL DATA PPL TP SENSOR 2 SIGNAL PPL/WHT WIRE RES+ SET- STOP FUSE 54 STOP LAMP SWITCH (ABOVE BRAKE PEDAL ASSEMBLY) TAC MOTOR CONTROL-1 TAC MOTOR CONTROL-2 TAN WIRE TAN/WHT WIRE THROTTLE BODY (TOP OF ENGINE) TP SENSOR 1 SIGNAL TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) VEHICLE SPEED SENSOR (VSS) (LEFT REAR OF TRANSFER CASE) VSS HIGH SIGNAL VSS LOW SIGNAL WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT FRONT KICK PANEL) DEFOGGER INDICATOR HOT AT ALL TIMES HVAC CONTROL MODULE (BENEATH RADIO) IND CTRL LOGIC LT BLU WIRE R/WDO DEFG FUSE 30 REAR DEFOG INDICATOR CTRL REAR DEFOG SWITCH SIG REAR DEFOGGER SWITCH GROUND REAR WINDOW DEFOGGER RELAY CNTRL RR DEFOG RELAY 71 SW SIG TAN WIRE UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) WHT WIRE

1807 2040 PPL BCM FUSE 14 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND RIGHT FRONT KICK PANEL) BRN/WHT WIRE CLASS 2 SERIAL DATA CLSTR FUSE 19 DRIVER DOOR JAMB SWITCH (IN LOWER LEFT "B" PILLAR) ENGINE CONTROL MODULE (RIGHT REAR CORNER OF ENGINE COMPT) EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM FRT TRN/HAZRD/ CTSY MIR FUSE 56 GRY WIRE GRY/BLK WIRE HORNS SYSTEM HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER LEFT REAR DOOR JAMB SWITCH (IN LOWER LEFT "C" PILLAR) LIFTGATE AJAR SWITCH (IN RIGHT "D" PILLAR) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PASSENGER DOOR JAMB SWITCH (IN LOWER RIGHT "B" PILLAR) PNK/WHT WIRE PPL REAR TRN/ HAZRD FUSE 20 RIGHT REAR DOOR JAMB SWITCH (IN LOWER RIGHT "C" PILLAR) SECURITY IND CTRL HORN RLY CTRL SECURITY INDICATOR UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) WHT WIRE

1807 1807 COMPUTER DATA LINES SYSTEM A/C ON IND MODE SWITCH A/C ON SWITCH BLK WIRE BLK/WHT WIRE BLOWER MOTOR (BELOW RIGHT SIDE OF DASH) BLOWER MOTOR RESISTOR ASSEMBLY (ATTACHED TO BOTTOM OF BLOWER) BLOWER MOTOR SWITCH BRN WIRE DEFOG SW SIG DEFOGGER SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRD GRD DIMMER SW SIG A/C RECIR REQ SIG DEFOG IND CCTRL A/C REQ SIG GRY WIRE HIGH SPEED BLOWER MOTOR RELAY (ATTACHED TO BLOWER MOTOR CASE) HOT AT ALL TIMES HVAC BLWR FUSE 82 HVAC CNTRL HD FUSE 59 HVAC CONTROL MODULE (BENEATH RADIO) HVAC RELAY 87 IGN 3 VOLT IGN RLY CTRL A/C REQ SIG A/C RECIR REQ SIG SERIAL DATA SERIAL DATA IN MAIN BUNDLE) LOGIC LOW OFF LOW REF MODE DOOR SIG EVAP TEMP SIG R AIR TEMP SIG L AIR TEMP SIG LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PNK PPL PPL WIRE PNK WIRE RDO FUSE 13 RECIR- CULATION SWITCH RECIRC A RECIRC B MODE DOOR B R AIR TEMP B AIR TEMP A L AIR TEMP B RED/BLK WIRE TAN WIRE TAN/BLK WIRE TEMPERATURE SWITCH RECIR- CULATION IND UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) WHT WIRE YEL WIRE

3.7L 5.3L 53 15 RLY CTRL SERIAL DATA PPL 55 35 ECT SENS SIG LOW REF 57 37 21 PRESS SENS SIG A/C CLUTCH DIODE 90 A/C CLUTCH RELAY 76 A/C COMPRESSOR CLUTCH (PART OF A/C COMPRESSOR) A/C REFRIGERANT PRESSURE SENSOR (ON HIGH PRESSURE HOSE CONNECTION TO COMPRESSOR) AC CLUTCH FUSE 48 BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (RIGHT REAR CORNER OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (FRONT LEFT OF ENGINE) EVAPORATOR TEMPERATURE SENSOR (BEHIND RIGHT LOWER DASH) GRY WIRE HOT AT ALL TIMES HOT W/ RUN/ CRANK RELAY 78 ENERGIZED LEFT AIR TEMPERATURE ACTUATOR LOGIC LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE ACTUATOR (ON SIDE OF HEATER BOX) NCA WIRE RECIRCULATION ACTUATOR (UPPER RIGHT CORNER OF HEATER CASE) RED/BLK WIRE RIGHT AIR TEMPERATURE ACTUATOR (MOUNTED TO RIGHT SIDE OF HVAC MODULE ASSEMBLY) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) YEL WIRE