Hummer H2 I facelift (2007-2009) (at rear of left cylinder head) Wiring diagrams

BLK WIRE COOLING FAN DIODE 1 COOLING FAN DIODE 2 DK BLU WIRE DK GRN WIRE FAN 1 FUSE 50 FAN 2 FUSE 53 FAN CONTROL RELAY FAN HI RELAY FAN LO RELAY GRN WIRE GRY WIRE HOT AT ALL TIMES INSIDE AIR TEMPERATURE SENSOR (IN LEFT FRONT HEADLINER ABOVE DRIVER) LEFT ENGINE COOLING FAN (LEFT FRONT OF ENGINE COMPT NEAR RADIATOR) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF INSTRUMENT LT BLU WIRE LT GRN/BLK WIRE ORG/BLK WIRE PANEL TO LEFT OF STEERING COLUMN) PWR/ TRN RELAY RIGHT ENGINE COOLING FAN (RIGHT FRONT OF ENGINE COMPT NEAR RADIATOR) RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF I/P BEHIND END TRIM PANEL) SIDE OF ENGINE COMPT, NEAR BATTERY) TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT WHT/BLK WIRE YEL WIRE

BCK/UP LAMP PCB RELAY BLK WIRE DK BLU WIRE FUSE 13 GRY WIRE HOT AT ALL TIMES INSIDE REARVIEW MIRROR (ISRVM) LEFT BACKUP LAMP LT GRN WIRE NCA WIRE REARVIEW CAMERA (CENTER OF REAR BUMPER ABOVE TRAILER HITCH RECEIVER) RIGHT BACKUP LAMP RLY CTRL TRAILER CONNECTOR (AT REAR OF VEHICLE BELOW BELOW REAR BUMPER) TRLR BCK/UP FUSE 8 UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VEH BCK/UP

5 6 CLASS 2 SER DATA LO PRESS SENS SIG A/C CMPRSR FUSE 15 A/C COMP A/C COMPRESSOR CLUTCH (AT LOWER RIGHT FRONT OF ENGINE) A/C COMPRESSOR RELAY A/C ON IND A/C ON SWITCH A/C REF PRE SENS SIG BLK WIRE CL RLY CTRL CLASS 2 COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRY WIRE HVAC CONTROL MODULE LOGIC LOW REF ORG/BLK WIRE SERIAL DATA TAN WIRE TAN/BLK WIRE WHT WIRE

15 13 PPL PPL 7 3 MIRROR HTR GROUND BLK WIRE CLASS 2 SER DATA COMPUTER DATA LINES SYSTEM CONTACT PLATE DEFOG RLY CTL DK GRN WIRE DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER OUTSIDE REARVIEW MIRROR GRN WIRE HOT AT ALL TIMES LOGIC LOGIC HVAC CONTROL MODULE MIDGATE WINDOW MOTOR (INSIDE MIDGATE ON LEFT SIDE) ORG/ WIRE PASSENGER DOOR LOCK/ WINDOW SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PPL REAR DEFOG FUSE 42 REAR DEFOG RELAY REAR DEFOGGER IND REAR DEFOGGER SWITCH REAR WINDOW DEFOGGER GRID SERIAL DATA UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE

7 3 MIRROR HTR GROUND BLK WIRE CLASS 2 SER DATA COMPUTER DATA LINES SYSTEM DEFOG RLY CTL DK GRN WIRE DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER OUTSIDE REARVIEW MIRROR GRN WIRE HOT AT ALL TIMES LOGIC HVAC CONTROL MODULE ORG/ WIRE PASSENGER DOOR LOCK/ WINDOW SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PPL REAR DEFOG FUSE 42 REAR DEFOG RELAY REAR DEFOGGER IND REAR DEFOGGER SWITCH REAR WINDOW DEFOGGER GRID SERIAL DATA UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT WIRE

20 21 WIPER SW SIG 2 WIPER SW HI SIG 24 9 8 5 PNK WASHER SW SIG WIPER SW LO SIG LOW REF WIPER SW HI SIG WIRE BAT POS VOLT BLK WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE GRN WIRE GRY WIRE HI LO HOT AT ALL TIMES I/P FUSE BLOCK (ON LOWER LEFT SIDE OF I/P, BEHIND ACCESS PANEL) INSTRUMENT PANEL CLUSTER (IPC) LOGIC LOW SPD GMLAN SERIAL DATA LOW WASHER FLUID IND CTRL LT BLU WIRE LT GRN WIRE MIST HI OFF LO INT WIPER SWITCH MIST OFF INT MTR PARK SW SIG NCA WIRE PNK WIRE PPL PPL DK RED WIRE RED/WHT WIRE RT STOP TURN FUSE TAN WIRE TAN/BLK WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT) W/ HEATED WINDSHIELD WASHER FLUID WASHER SWITCH WHT WIRE WINDSHIELD WASHER SOLVENT HEATER (LEFT REAR CORNER OF ENGINE COMPT) WINDSHIELD WIPER MOTOR (UNDER WINDSHIELD COWL BETWEEN WIPER ARMS) WIPER CONTROL PCB RELAY WIPER HIGH SPEED DIODE WIPER LOW SPEED DIODE WIPER SPEED PCB RELAY WPR FUSE 30 YEL WIRE

A/C CMPRSR RELAY AUTOMATIC TRANSMISSION SHIFT LEVER BANK 1 SENSOR 1 BANK 1 SENSOR 2 BANK 2 SENSOR 1 BANK 2 SENSOR 2 BLK WIRE BODY CONTROL MODULE (BCM) BRN WIRE ECM/THROT CNTRL FUSE 3 ENG FUSE 2 ENGINE CONTROL MODULE (ECM) FAN 1 FUSE 50 FAN 2 FUSE 53 FAN CNTRL RELAY FAN HI RELAY FAN LO RELAY FROM PRK LAMP RELAY (DIAGRAM 1 OF 4) FUEL IGNITION IGNITION INJECTOR COIL/ COIL/ MODULE MODULE FUEL INJECTOR FUSE (DIAGRAM 3 OF 4) HEATED OXYGEN SENSOR HVAC CONTROL MODULE IGNITION COIL MODULE IGNITION FUEL COIL/ INJECTOR MODULE IGNITION FUEL FUEL COIL/ INJECTOR INJECTOR MODULE IGNITION IGNITION COIL/ COIL/ MODULE MODULE INJ-A FUSE 20 INJ-B FUSE 11 LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH TO LEFT OF STEERING COLUMN) MIDGATE MIDGATE WINDOW WINDOW MOTOR SWITCH NCA WIRE ORG/ WIRE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE PWR/TRN PCB RELAY RUN/ACCY FUSE 40 RUN/ACCY PCB RELAY SNSR FUSE 16 SNSR FUSE 6 SUNROOF MODULE SUT TO INJ-A FUSE (DIAGRAM 3 OF 4) TO RUN/ CRNK RELAY (DIAGRAM 4 OF 4) W/ HEATED W/S WASHER WINDSHIELD WASHER SOLVENT HEATER YEL WIRE

5-VOLT REFERENCE AIR BAG IGN FUSE 34 AUX HVAC IGN FUSE 41 AUXILIARY AIR TEMPERATURE ACTUATOR AUXILIARY MODE ACTUATOR BLK WIRE BODY CONTROL MODULE (BCM) DK BLU WIRE ENGINE CONTROL MODULE (ECM) FROM PWR/TRN PCB RELAY (DIAGRAM 3 OF 4) HVAC IGN FUSE 46 IGN IGNITION SWITCH INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH INFLATABLE RESTRAINT PASSENGER AIR BAG ON/OFF INDICATOR INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) INSIDE REARVIEW MIRROR (ISRVM) INSTRUMENT PANEL CLUSTER (IPC) KEY IGNITION SWITCH LEFT MODE AIR ACTUATOR TEMPERATURE ACTUATOR MISC IGN FUSE 37 NCA WIRE OF DASH BEHIND END TRIM PANEL) OFF ORG/ WIRE PNK PNK WIRE PNK WIRE REARVIEW CAMERA (IF EQUIPPED) RECIRCULATION ACTUATOR RED WIRE RED/WHT WIRE RIGHT AIR TEMPERATURE ACTUATOR RIGHT I/P JUNCTION BLOCK (RIGHT SIDE RUN WIRE RUN/CRNK RELAY SEO FUSE 45 THEFT DETERRENT MODULE (TDM) TO ECM IGN FUSE (DIAGRAM 2 OF 4) TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSION CONTROL MODULE (TCM) WHT WIRE YEL WIRE

5-VOLT REFERENCE AUTOMATIC TRANSMISSION BATTERY BATTERY CABLE JUNCTION BLOCK (PART OF POSITIVE BATTERY CABLE ASSEMBLY) BLK WIRE COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY DATA BUS - ENGINE COMPT, NEAR BATTERY) IGNITION III VOLTAGE IGNITION SWITCH INTERNAL MODE P/N SWITCH (IMS) OFF ORG/BLK WIRE PARK NEUTRAL SIGNAL PNK/BLK WIRE PPL RED WIRE RUN WIRE STARTER STARTER ENABLE RELAY CTRL STRTR FUSE 54 STRTR RELAY TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF WHT WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DIFF LOCK SW SIG 1553 1552 1342 MOTOR CONTROL B MOTOR CONTROL A BATTERY POSITIVE VOL GROUND 2501 2500 SERIAL DATA BUS- SERIAL DATA BUS+ 4-HI IND 4-HI LOCK IND 4-LO LOCK IND AUX HVAC IGN FUSE 41 BLK WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DIFFERENTIAL LOCK ACTUATOR (ON REAR AXLE AT TOP OF DIFFERENTIAL HOUSING) DIFFERENTIAL LOCK IND DIFFERENTIAL LOCK SWITCH DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) GRY WIRE HOT AT ALL TIMES HOT W/ RUN/CRANK RELAY ENERGIZED HOT W/ RUN/CRNK RELAY ENERGIZED I/P MULTI-FUNCTION SWITCH IGNITION SWITCH INSTRUMENT PANEL CLUSTER (IPC) LOCK LOGIC LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MISC IGN FUSE 37 NCA WIRE NEUTRAL 4 LO LOCK 4 HI LOCK 4 HI NEUTRAL IND ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL/WHT WIRE REAR WIPER WASHER SW RED/BLK WIRE RUN WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSFER CASE ENCODER MOTOR (AT LEFT REAR OF TRANSFER CASE ASSEMBLY) TRANSFER CASE SHIFT CONTROL MODULE (BEHIND HEADLIGHT SWITCH) TRANSFER CASE SHIFT CONTROL SWITCH TREC FUSE 58 UNDERHOOD FUSE BLOCK WHT WIRE WIPER/WASHER SYSTEM YEL WIRE YEL/BLK WIRE YEL/RED WIRE