Chevrolet Suburban XI (2007-2013) low ref Wiring diagrams

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 AIR TMP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 B(+) A/C ON IND A/C ON SWITCH AIR TEMP PASS SUNLD SNS SIG SNS SIG AMB TMP GMLAN L AMBIENT LIGHT/ SUNLOAD SENSOR ASSEMBLY BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE FRESH AIR IND FRESH AIR REQUEST SWITCH FRONT DEFOGGER IND FRONT DEFOGGER SWITCH FRONT INSIDE AIR TEMPERATURE SENSOR (LEFT FRONT OF HEADLINER) GROUND IGN VOLT RER DEFG 300 193 GROUND LOW REF GRY WIRE GRY/BLK WIRE HVAC AMBIENT AIR TEMPERATURE SENSOR (RIGHT FRONT OF ENGINE COMPT) HVAC CONTROL MODULE JUNCTION BLOCK (LEFT END OF DASH) LEFT TEMPERATURE CONTROL LOGIC LOW REF LOWER AUXILIARY AIR TEMPERATURE SENSOR (REAR HVAC MODULE) LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MODE DOWN SWITCH MODE UP SWITCH OF DASH) ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM DEFOGGER SYSTEM PPL PPL/WHT WIRE R AIR TMP AIR TMP R AIR TMP TEMP SIG MODE CTRL L AIR TMP RECIR CTRL R AIR TMP REAR DEFOGGER IND REAR DEFOGGER SWITCH RECIRCU- LATION IND RECIRCU- LATION SWITCH RED WIRE RED/WHT WIRE RIGHT TEMPERATURE CONTROL SNS SIG LF SUNLD L AIR TMP R AIR TMP SW SIG MODE CNTRL SPD CTRL TAN WIRE UPPER AUXILIARY AIR TEMPERATURE SENSOR UPPER LEFT AIR TEMPERATURE SENSOR WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

AUTO SWITCH AUXILIARY AIR TEMPERATURE ACTUATOR (REAR HVAC MODULE ASSEMBLY) AUXILIARY BLOWER MOTOR CONTROL MODULE AUXILIARY INSIDE AIR TEMPERATURE SENSOR AUXILIARY MODE ACTUATOR (REAR HVAC MODULE) BLK WIRE BLOWER SPEED DOWN SWITCH BLOWER SPEED UP SWITCH BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE GMLAN GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK LOGIC LOGIC BLOWER SPEED UP SWITCH LOW REF MDE CNTRL TEMP CNTRL LOW REF MODE SWITCH MTR CNTRL ORG/ WIRE PNK WIRE REAR HVAC FUSE (LEFT END OF DASH) REAR SEAT AUDIO (RSA) CONTROL RED/WHT WIRE SNS CNTRL SPD CTRL TEMPERATURE DOWN SWITCH TEMPERATURE UP SWITCH

BLK WIRE COIL CTRL DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (FRONT OF LEFT CYLINDER HEAD) FAN CNTRL RELAY FAN HI RELAY FAN LO RELAY FAN-1 FUSE 57 PWR/ TRN RELAY FAN-2 FUSE 60 GRY WIRE HOT AT ALL TIMES LEFT COOLING FAN (BEHIND RADIATOR) LOW REF LT BLU WIRE RIGHT COOLING FAN (BEHIND RADIATOR) RLY CTRL SENS SIG TAN WIRE UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) YEL WIRE

7 3 SUPPLY VOLT LOW REF BATTERY BLK WIRE COMPUTER DATA LINES SYSTEM DDM FUSE DEFOG IND DK GRN WIRE DRIVER DOOR LOCK/WINDOW SWITCH DRIVER OUTSIDE REARVIEW MIRROR (IF EQUIPPED) GMLAN SER DATA GROUND HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT END OF DASH) IGN LOGIC LOW REF PASSENGER DOOR LOCK/WINDOW SWITCH PASSENGER OUTSIDE REARVIEW MIRROR (IF EQUIPPED) PDM FUSE POWER DISTRIBUTION SYSTEM REAR DEFOG SWITCH RED WIRE RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (RIGHT END OF DASH) SERIAL DATA SUPPLY VOLT WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LED CNTRL IGN VOLT GROUND B(+) GMLAN L 193 735 1050 597 6101 DEFOGGER SYSTEM A/C ON IND A/C ON SWITCH LOGIC AUXILIARY HVAC CONTROL MODULE (CENTER OF HEADLINER) BLK WIRE BLK/WHT WIRE BLOWER CONTROL SWITCH BLWR SPD BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DFRST VAL DK BLU WIRE DK GRN WIRE EVAPORATOR TEMPERATURE SENSOR (ON HVAC ASSEMBLY) FRONT DEFOGGER IND FRONT DEFOGGER SWITCH GRY WIRE GRY/BLK WIRE HVAC AMBIENT AIR TEMPERATURE SENSOR HVAC CONTROL MODULE INTERIOR LIGHTS SYSTEM POWER DISTRIBUTION SYSTEM 6817 300 1851 3340 5060 LEFT TEMPERATURE CONTROL LOW REF LT BLU WIRE LT GRN/BLK WIRE MODE SELECT SWITCH MODE SIG MTR SIG ORG/ WIRE PNK SW SIG MODE SIG TEMP SIG WIRE PNK WIRE PPL PPL/WHT WIRE REAR DEFOGGER IND REAR DEFOGGER SWITCH RECIRCU- LATION IND RECIRCU- LATION SWITCH RED WIRE RED/WHT WIRE RER DEFG AIR TMP GROUND RIGHT I/P JUNCTION BLOCK (RIGHT END OF DASH) RIGHT TEMPERATURE CONTROL SPD CTRL TAN WIRE TEMPERATURE CONTROL SWITCH WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

AUXILIARY AIR TEMPERATURE ACTUATOR (REAR HVAC MODULE ASSEMBLY) AUXILIARY BLOWER MOTOR CONTROL MODULE AUXILIARY MODE ACTUATOR (REAR HVAC MODULE) BLK WIRE BLOWER SPEED BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE DOWN GMLAN GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK LOGIC LOW REF MDE CNTRL TEMP CNTRL LOW REF MODE SWITCH MTR CNTRL ORG/ WIRE PNK WIRE REAR HVAC FUSE (LEFT END OF DASH) REAR SEAT AUDIO (RSA) CONTROL RED/WHT WIRE SPD CTRL TEMPERATURE CONTROL

1272 890 PPL LOW REF PRESS SENS SIG 5985 439 440 PNK WIRE ACCELERATOR PEDAL POSITION (APP) SENSOR (ACCELERATOR PEDAL ASSEMBLY) AIR CONDITIONING SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM COMPUTER DATA LINES SYSTEM DATA BUS - DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) EXCEPT 6.0L 6.0L EXTENSION FLOW CONTROL MODULE) FUEL PRESSURE SENSOR GRY WIRE GRY/WHT WIRE IAT SENS SIG LOW REF IGN VOLT LOW REF LT BLU WIRE LT BLU/WHT WIRE MAF NCA WIRE ORG/BLK WIRE PNK W/O INTEGRATED TRAILER BRAKE PNK PNK W/ INTEGRATED TRAILER BRAKE WIRE PNK WIRE PPL PPL 6.0L PPL PPL EXCEPT 6.0L PPL LEVEL SENS SIG FAN RLY CTRL SERIAL DATA IGN VOLTAGE B+ PPL/WHT WIRE PRIMARY FUEL PUMP, SENDER ASSEMBLY (EXCEPT 6.0L) (PRIMARY FUEL PUMP ASSEMBLY) PUMP CTRL RED/WHT WIRE REF VOLT RELAY CTRL SENS SIG SERIAL DATA SHLD TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSIONS SYSTEM WHT/BLK WIRE YEL WIRE

BANK 1 SENS 1 BANK 2 SENS 1 BLK WIRE BRN WIRE CAMSHAFT POSITION (CMP) SENSOR (LOWER FRONT OF ENGINE) CRANKSHAFT POSITION (CKP) SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE DUTY CYCLE SIG ECT SENS SIG ENGINE COOLANT TEMPERATURE (ECT) SENSOR (FRONT OF LEFT CYLINDER HEAD) ENGINE OIL PRESSURE (EOP) SENSOR (TOP REAR OF ENGINE) GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN SENSOR INJ 1 CTRL INJ 2 CTRL INJ 3 CTRL INJ 4 CTRL INJ 5 CTRL INJ 6 CTRL INJ 7 CTRL INJ 8 CTRL KNOCK SENSOR (KS) 1 (LEFT SIDE OF ENGINE) KNOCK SENSOR (KS) 2 (RIGHT SIDE OF ENGINE) LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (TOP REAR OF ENGINE) NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK GRY/WHT WIRE PNK PNK 18 19 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE PURGE SOL CTRL SENS 1 SIG SENS 2 SIG SENSOR 1 SOL CTRL SOL CTRL 1 SOL CTRL 2 SOL CTRL 3 SOL CTRL 4 STARTING/ CHARGING SYSTEM TAC MTR CTRL 1 TAC MTR CTRL 2 TAN PPL/WHT WIRE TAN WIRE TAN/WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1272 890 PPL LOW REF PRESS SENS SIG 5985 439 440 PNK WIRE ACCELERATOR PEDAL POSITION (APP) SENSOR (ACCELERATOR PEDAL ASSEMBLY) AIR CONDITIONING SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM COMPUTER DATA LINES SYSTEM DATA BUS - DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) EXCEPT 6.0L 6.0L EXTENSION FLOW CONTROL MODULE) FUEL PRESSURE SENSOR GRY WIRE GRY/WHT WIRE IAT SENS SIG LOW REF IGN VOLT LOW REF LT BLU WIRE LT BLU/WHT WIRE MAF NCA WIRE ORG/BLK WIRE PNK W/O INTEGRATED TRAILER BRAKE PNK PNK W/ INTEGRATED TRAILER BRAKE WIRE PNK WIRE PPL PPL 6.0L PPL PPL EXCEPT 6.0L PPL LEVEL SENS SIG FAN RLY CTRL SERIAL DATA IGN VOLTAGE B+ PPL/WHT WIRE PRIMARY FUEL PUMP, SENDER ASSEMBLY (EXCEPT 6.0L) (PRIMARY FUEL PUMP ASSEMBLY) PUMP CTRL RED/WHT WIRE REF VOLT RELAY CTRL SENS SIG SERIAL DATA SHLD TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSIONS SYSTEM WHT/BLK WIRE YEL WIRE

BANK 1 SENS 1 BANK 2 SENS 1 BLK WIRE BRN WIRE CAMSHAFT POSITION (CMP) SENSOR (LOWER FRONT OF ENGINE) CRANKSHAFT POSITION (CKP) SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE DUTY CYCLE SIG ECT SENS SIG ENGINE COOLANT TEMPERATURE (ECT) SENSOR (FRONT OF LEFT CYLINDER HEAD) ENGINE OIL PRESSURE (EOP) SENSOR (TOP REAR OF ENGINE) GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN SENSOR INJ 1 CTRL INJ 2 CTRL INJ 3 CTRL INJ 4 CTRL INJ 5 CTRL INJ 6 CTRL INJ 7 CTRL INJ 8 CTRL KNOCK SENSOR (KS) 1 (LEFT SIDE OF ENGINE) KNOCK SENSOR (KS) 2 (RIGHT SIDE OF ENGINE) LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (TOP REAR OF ENGINE) NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK GRY/WHT WIRE PNK PNK 18 19 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE PURGE SOL CTRL SENS 1 SIG SENS 2 SIG SENSOR 1 SOL CTRL SOL CTRL 1 SOL CTRL 2 SOL CTRL 3 SOL CTRL 4 STARTING/ CHARGING SYSTEM TAC MTR CTRL 1 TAC MTR CTRL 2 TAN PPL/WHT WIRE TAN WIRE TAN/WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE