Hummer H2 I facelift (2007-2009) low ref Wiring diagrams

12 13 PPL BRK SW SIG 17 19 GMLAN BUS- SERIAL DATA ABS IND. ABS PUMP MOTOR ANG SENS SIG BLK WIRE BLK/PPL WIRE BLK/WHT WIRE BRAKE IND BRK SENS SIG PPL BRN WIRE CAN BUS HI CAN BUS LO CLASS 2 SER DATA COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM IGN FUSE 47 ENGINE COMPT, NEAR BATTERY) GND CAN BUS LO CAN BUS HI GND SENS PHASE C GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HI SPD GMLAN - HI SPD GMLAN + LO REF HI SPD GMLAN HI SPD GMLAN HOT AT ALL TIMES HOT W/ RUN/CRNK RELAY ENERGIZED IGN CLASS 2 SER DATA IGN GND ANGLE SENS A INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 39 L SPEED SENS SIG L WHEEL SPD SIG LEFT FRONT WHEEL SPEED SENSOR (ON LEFT FRONT WHEEL HUB ASSEMBLY) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF INSTRUMENT PANEL TO LEFT LEFT REAR WHEEL SPEED SENSOR (ON LEFT REAR WHEEL HUB ASSEMBLY) LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE OF STEERING COLUMN) ORG/BLK WIRE ORG/WHT WIRE PARK BRAKE SWITCH PNK WIRE PPL PRK BRK SW R SPEED SENS SIG R WHEEL SPD SIG RADIO AUDIO W/ DVD NAVIGATION RED/BLK WIRE RED/WHT WIRE RIGHT REAR WHEEL SPEED SENSOR (ON RIGHT REAR WHEEL HUB ASSEMBLY) SENS PHASE B SERIAL DATA STOP LAMP SWITCH TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL IND UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF VEHICLE SPD SIG VSES/ ABS 1 FUSE 52 VSES/ ABS 2 FUSE 7 VSS YEL WIRE

A/C CLUTCH A/C CMPRSR FUSE 15 A/C CMPRSR RELAY BLK WIRE BLK/WHT WIRE BRN WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECT SIG ENGINE COMPT, NEAR BATTERY) GRY WIRE GRY/BLK WIRE HEADLIGHTS SYSTEM HI SPD FAN HOT AT ALL TIMES LEFT AIR TEMPERATURE LOGIC ACTUATOR (BOTTOM CENTER OF HVAC MODULE ASSEMBLY) LEFT RIGHT SUNLOAD SUNLOAD SENSOR SENSOR LO SPD FAN LOGIC LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE ACTUATOR (ON LEFT SIDE OF HVAC ASSEMBLY) ORG/BLK WIRE PNK WIRE PPL PPL/WHT WIRE RECIRCULATION ACTUATOR (ON TOP FRONT OF HVAC ASSEMBLY) RED WIRE RED/BLK WIRE RIGHT AIR TEMPERATURE ACTUATOR (AT MIDDLE TOP OF HVAC ASSEMBLY) RIGHT I/P JUNCTION BLOCK (RIGHT SIDE OF I/P BEHIND END TRIM PANEL) RLY CTRL SENS SIG SPD CTRL TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

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

11 14 1 GND CUSHION ELEMENT CTRL SEAT BACK ELEMENT CTRL PNK PPL WIRE 2 6 PNK PNK LOW REF LOW REF WIRE 6 1 4 B+ GND GND 6 4 CUSHION ELEMENT CTRL SEAT BACK ELEMENT CTRL BLK WIRE COMPUTER DATA LINES SYSTEM DDM FUSE DK BLU WIRE DK GRN WIRE DRIVER BACK HEATED SEAT ELEMENT (UNDER DRIVER SEAT BACK UPHOLSTERY) DRIVER CUSHION HEATED SEAT ELEMENT (IN DRIVER SEAT CUSHION) DSM FUSE GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (ON LOWER LEFT SIDE OF I/P, BEHIND ACCESS PANEL) LOW REF LOW SPD SERIAL DATA LT BLU WIRE LT GRN WIRE MEMORY SEAT MODULE (UNDER DRIVER SEAT) NCA WIRE PASSENGER BACK HEATED SEAT ELEMENT (UNDER PASSENGER SEAT BACK UPHOLSTERY) PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER SEAT CUSHION) PDM FUSE PNK GND WIRE PNK WIRE PPL RED/WHT WIRE SEAT BACK TEMP SIG SEAT CUSHION TEMP SIG TAN WIRE TAN/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 6 7 VERT POSITION CTRL HORZ POSITION CTRL LOW REF MTR COMMON ELEMENT CTRL 4 6 B+ GND 5 14 SW SIG BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DDM FUSE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOWN DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER MEMORY/ HEATED SEAT SWITCH DRIVER OUTSIDE REARVIEW MIRROR ELECTRO- CHROMIC MIRROR EXIT GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES I/P FUSE BLOCK LEFT LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE MIRRORS SYSTEM ORG/ WIRE ORG/BLK WIRE PASSENGER DOOR LOCK/ WINDOW SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PDM (ON LOWER LEFT FUSE SIDE OF I/P, BEHIND ACCESS PANEL) PNK WIRE PPL RED/WHT WIRE RETRACT RIGHT EXTEND RIGHT SELECT SERIAL DATA SWITCH PWR LEFT SELECT WHT WIRE YEL WIRE

12 2 PNK WIRE 4 9 PNK WIRE AUTOMATIC DAY/NIGHT MIRROR SIG AUX HVAC IGN FUSE 41 BACKUP LAMP RLY CTRL BLK WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN/WHT WIRE DRAIN DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER OUTSIDE REARVIEW MIRROR ELECTROCHROMIC MIRROR GROUND GRY WIRE GRY/BLK WIRE HIGH SPEED SER DATA BUS- HOT W/ RUN/ CRANK RELAY ENERGIZED I/P FUSE BLOCK (ON LOWER LEFT SIDE OF I/P, BEHIND ACCESS PANEL) IGN INSIDE REARVIEW MIRROR (ISRVM) LOGIC LOW REF LT BLU WIRE NAVIGATION SYSTEM NCA WIRE OUTSIDE AIR TEMP DISPLAY OUTSIDE AIR TEMPERATURE SIG PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VIDEO+ WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 B+ GND BACK CUSHION IND BACK IND BACK SWITCH BACK/ CUSHION SWITCH BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE GND ELEMENT CTRL GND ELEMENT CTRL PNK WIRE HOT AT ALL TIMES I/P FUSE BLOCK (ON LOWER LEFT SIDE OF I/P, BEHIND ACCESS PANEL) LEFT REAR CUSHION HEATED SEAT ELEMENT (UNDER RIGHT REAR SEAT CUSHION UPHOLSTERY) LOGIC REAR SEAT AUDIO (RSA) CONTROL LOW REF LT BLU WIRE NCA WIRE ORG/ WIRE PNK WIRE REAR HEATED SEAT CONTROL MODULE (UNDER FRONT OF LEFT REAR SECOND ROW SEAT) REAR SEAT FUSE RED/WHT WIRE RIGHT REAR CUSHION HEATED SEAT ELEMENT (UNDER LEFT REAR SEAT CUSHION UPHOLSTERY) SENS SIG SERIAL DATA WHT/BLK WIRE

5-VOLT BETWEEN THE BREAKOUTS FOR IGNITION COILS 3, 5) BLK WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CHG IND SIG CMP SIG COMPUTER DATA LINES SYSTEM DATA BUS - DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT BELOW BATTERY, EOP SIG FUEL FUSE 18 FUSE BLOCK- UNDERHOOD GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGN VOL IGNITION COIL 1 IGNITION COIL 3 IGNITION COIL 5 IGNITION COIL 7 LO REF LO REF LO REF LO REFERENCE LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MAP SIG PPL NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK WIRE PPL PPL PNK WIRE PPL/WHT WIRE PUMP CTRL RED WIRE RED/WHT WIRE REL CTRL SENS SIG SER DATA SPARK PLUG STARTING/CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) WHT/BLK WIRE