Chevrolet RV Cutaway G3500 (1997-2013) underhood junction block Wiring diagrams

ABS/VSES FUSE 48 AUX PWR FUSE 29 AUXILIARY GENERATOR AUXILIARY POWER OUTLET 2 BATTERY BLK WIRE BLOWER MOTOR RESISTOR ASSEMBLY BODY CONTROL MODULE (BCM) BODY FUSE BLOCK CHIME (W/O RADIO) CIGAR LIGHTER AUXILIARY POWER OUTLET 1 COOLANT HEATER DATA LINK CONNECTOR (DLC) DRIVER SEAT ADJUSTER SWITCH (IF EQUIPPED) ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE CONTROL MODULE (ECM) FOH/ECM TCM BATT FUSE 2 FROM UNDERHOOD FUSE BLOCK (RFA FUSE 20) (DIAGRAM 1 OF 6) FRONT PASSENGER SEAT ADJUSTER SWITCH (IF EQUIPPED) FUSIBLE LINK 1 FUSIBLE LINK 2 FUSIBLE LINK 3 FUSIBLE LINK 4 FUSIBLE LINK 5 GENERATOR GLOW PLUG CONTROL MODULE (GPCM) HAZRD FUSE 14 INSTRUMENT PANEL CLUSTER (IPC) INTAKE AIR HEATER (IAH) MODULE IPC FUSE 31 LEFT TRAILER STOP/TURN RELAY (IF EQUIPPED) LTR FUSE 30 MEGA FUSE 65 NCA WIRE ORG/ WIRE PWR SEAT CIRCUIT BREAKER 60 RADIO (W/ RADIO) HVAC CONTROL ASSEMBLY RADIO BAT FUSE 1 RR DEF/HTD MIR FUSE 8 RED WIRE RED/BLK (OR RED) WIRE RED/BLK WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (IF EQUIPPED) RFA FUSE 20 RIGHT TRAILER STOP/TURN RELAY (IF EQUIPPED) SECONDARY BATTERY SPARE FUSE 64 STARTER MOTOR STOP LAMP SWITCH STOP LP FUSE 7 TBC 3 FUSE 16 TBC 4 FUSE 11 TBC FUSE 19 TBC 2 FUSE 18 TO BODY FUSE BLOCK (DOOR LKS FUSE 15) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (REAR FOG LAMPS FUSE 34) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (TBC FUSE 19) (DIAGRAM 1 OF 6) TRANSMISSION CONTROL MODULE (TCM) TRL STOP/TRN FUSE 17 TRLR FUSE 13 BLOW FUSE 51 TRLR FUSE 50 TURN SIGNAL/ HAZARD FLASHER MODULE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK W/ CIGAR LIGHTER W/ REAR WINDOW DEFOGGER/ HEATED MIRRORS W/O CIGAR LIGHTER

BATTERY BLK WIRE CRANK FUSE 27 CRANK VOLT DK GRN WIRE ENG 1 FUSE 23 ENGINE CONTROL MODULE (ECM) (ON LEFT FRAME RAIL) FUSIBLE LINK 2 GENERATOR HOT AT ALL TIMES IGN A FUSE 49 IGN B FUSE 52 IGNITION SWITCH LOCK PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION) PNK WIRE POWER DISTRIBUTION SYSTEM PPL RED WIRE RED/BLK WIRE RUN WIRE SECONDARY BATTERY STARTER ENABLE RELAY CTRL STARTER MOTOR STARTER RELAY 61 UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENG COMPT) UNDERHOOD JUNCTION BLOCK YEL WIRE YEL/BLK WIRE

AUXILIARY BATTERY AUXILIARY GENERATOR BATTERY BLK WIRE BRN/WHT WIRE CHARGE IND CHARGE IND CTRL COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) LOGIC ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) FUSIBLE LINK 3 FUSIBLE LINK 5 GENERATOR GENERATOR FIELD DUTY CYCLE SIG GENERATOR TURN ON SIG GRY WIRE HOT W/ RUN/CRANK RELAY ENERGIZED IGN VOLT INSTRUMENT PANEL CLUSTER (IPC) IP CLSTR FUSE 10 ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM RED WIRE SER DATA BUS - SERIAL DATA STARTER MOTOR TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK VOLT W/ DUAL GENERATOR, AMBULANCE UPFITTER

ABS MDL FUSE 60 ABS MTR FUSE 61 AUX PWR OUTLET FUSE 33 AUXILIARY BATTERY AUXILIARY GENERATOR BATTERY BCM 1 FUSE 20 BCM 2 FUSE 37 BCM 3 FUSE 26 BCM 4 FUSE 22 BCM 5 FUSE 27 BCM 6 FUSE 23 BCM 7 FUSE 25 BLK WIRE BLOWER MOTOR RESISTOR BODY CONTROL MODULE (BCM) BODY FUSE BLOCK (UNDER LEFT FRONT SEAT) BRN WIRE CENTER CENTER CONSOLE 1 ACCESSORY CONSOLE 2 ACCESSORY POWER POWER OUTLET OUTLET CIGAR LIGHTER CMPS FUSE 2 COOLANT HEATER (W/ AUXILIARY HEATER) DATA LINK CONNECTOR (DLC) ECM BATT FUSE 54 ELECTRONIC (BEHIND LEFT COMPASS KICK PANEL) MODULE (IF EQUIPPED) ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE CONTROL MODULE (ECM) FOH MDL FUSE 14 FRT BLWR FUSE 66 FUSIBLE LINK 1 FUSIBLE LINK 2 FUSIBLE LINK 3 FUSIBLE LINK 4 FUSIBLE LINK 5 (W/ DUAL GENERATOR, AMBULANCE UPFITTER) GENERATOR GLOW PLUG CONTROL MODULE (GPCM) INSTRUMENT PANEL CLUSTER (IPC) (W/ ODOMETER SECURITY WIRING PROVISION (SEO)) INTAKE AIR HEATER (IAH) LTR/DLC FUSE 38 NCA WIRE RED WIRE RED/BLK WIRE RED/WHT WIRE SEO FUSE #21 STARTER MOTOR TCM BATT FUSE 44 TO HIGH BEAM PCB RELAY (DIAGRAM 2 OF 4) TO HVAC 2 FUSE 1 (DIAGRAM 4 OF 4) TO RUN RELAY 39 (DIAGRAM 4 OF 4) TRANSMISSION CONTROL MODULE (TCM) TRLR WRG TRLR WRG FUSE 35 FUSE 62 UNDERHOOD JUNCTION BLOCK UPFTR AUX 2 RELAY 42 (CUTAWAY, AMBULANCE, RV UPFITTERS) UPFTR AUX 2 FUSE 35 W/ ACTIVE BRAKE CONTROL W/ CIGAR LIGHTER W/ RV UPFITTER W/ TRUCK TRAILER W/ W/ RV CUTAWAY UPFITTER UPFITTER W/O ACTIVE BRAKE CONTROL W/O CIGAR LIGHTER

ABS/VSES FUSE 48 AUX PWR FUSE 29 AUXILIARY GENERATOR AUXILIARY POWER OUTLET 2 BATTERY BLK WIRE BLOWER MOTOR RESISTOR ASSEMBLY BODY CONTROL MODULE (BCM) BODY FUSE BLOCK CHIME (W/O RADIO) CIGAR LIGHTER AUXILIARY POWER OUTLET 1 COOLANT HEATER DATA LINK CONNECTOR (DLC) DRIVER SEAT ADJUSTER SWITCH (IF EQUIPPED) ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE CONTROL MODULE (ECM) FOH/ECM TCM BATT FUSE 2 FROM UNDERHOOD FUSE BLOCK (RFA FUSE 20) (DIAGRAM 1 OF 6) FRONT PASSENGER SEAT ADJUSTER SWITCH (IF EQUIPPED) FUSIBLE LINK 1 FUSIBLE LINK 2 FUSIBLE LINK 3 FUSIBLE LINK 4 FUSIBLE LINK 5 GENERATOR GLOW PLUG CONTROL MODULE (GPCM) HAZRD FUSE 14 INSTRUMENT PANEL CLUSTER (IPC) INTAKE AIR HEATER (IAH) MODULE IPC FUSE 31 LEFT TRAILER STOP/TURN RELAY (IF EQUIPPED) LTR FUSE 30 MEGA FUSE 65 NCA WIRE ORG/ WIRE PWR SEAT CIRCUIT BREAKER 60 RADIO (W/ RADIO) HVAC CONTROL ASSEMBLY RADIO BAT FUSE 1 RR DEF/HTD MIR FUSE 8 RED WIRE RED/BLK (OR RED) WIRE RED/BLK WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (IF EQUIPPED) RFA FUSE 20 RIGHT TRAILER STOP/TURN RELAY (IF EQUIPPED) SECONDARY BATTERY SPARE FUSE 64 STARTER MOTOR STOP LAMP SWITCH STOP LP FUSE 7 TBC 3 FUSE 16 TBC 4 FUSE 11 TBC FUSE 19 TBC 2 FUSE 18 TO BODY FUSE BLOCK (DOOR LKS FUSE 15) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (REAR FOG LAMPS FUSE 34) (DIAGRAM 2 OF 6) TO UNDERHOOD FUSE BLOCK (TBC FUSE 19) (DIAGRAM 1 OF 6) TRANSMISSION CONTROL MODULE (TCM) TRL STOP/TRN FUSE 17 TRLR FUSE 13 BLOW FUSE 51 TRLR FUSE 50 TURN SIGNAL/ HAZARD FLASHER MODULE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK W/ CIGAR LIGHTER W/ REAR WINDOW DEFOGGER/ HEATED MIRRORS W/O CIGAR LIGHTER

AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION INTERNAL MODE SWITCH (IMS) AUXILIARY BATTERY BATTERY BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) GMLAN SERIAL DATA CHARGING CIRCUIT COMPUTER DATA LINES SYSTEM CONTROL SOLENOID VALVE ASSEMBLY CRNK RELAY 39 DATA BUS - DATA FUEL BUS (-) INJECTOR SUPPLY VOLTAGE DK GRN WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) FUSIBLE LINK 2 GRY WIRE IGNITION SWITCH IGNITION VOLTAGE OFF ORG/BLK WIRE PNK WIRE PPL RED WIRE RUN WIRE STARTER ENABLE RELAY CTRL STARTER MOTOR STRTR SOL FUSE 44 TAN WIRE TAN/BLK WIRE TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK WHT WIRE YEL/BLK WIRE

AUXILIARY BATTERY AUXILIARY GENERATOR GENERATOR BATTERY BLK WIRE CHARGE IND COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ENGINE CONTROL MODULE (ECM) FUSIBLE LINK 3 FUSIBLE LINK 5 GENERATOR FIELD DUTY CYCLE SIG GENERATOR TURN ON SIG GRY WIRE HOT W/ RUN/CRANK RELAY 15 ENERGIZED IGN VOLT INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE LOGIC ORG/ WIRE PNK WIRE POWER DISTRIBUTION SYSTEM RED WIRE SER DATA BUS - SERIAL DATA STARTER MOTOR TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) UNDERHOOD JUNCTION BLOCK W/ DUAL GENERATOR W/ DUAL GENERATOR, AMBULANCE UPFITTER

4 SPEED 6 SPEED A/T A/T 4.3L/ 5.3L 4.8L 6.0L 6.6L 6.6L 6.6L EXCEPT ABS MDL FUSE 2 ABS MTR FUSE 1 AMBULANCE UPFITTER) AUX PWR OUTLET FUSE 25 AUXILIARY BATTERY AUXILIARY GENERATOR BATTERY BCM 2 FUSE 58 BCM 1 FUSE 59 BCM 3 FUSE 26 BCM 7 FUSE 8 BCM 4 FUSE 9 BCM 5 FUSE 7 BCM 6 FUSE 72 BLK WIRE BLOWER MOTOR RESISTOR BODY CONTROL MODULE (BCM) BRN WIRE CENTER CONSOLE 2 ACCESSORY CENTER CONSOLE 1 ACCESSORY CIGAR LIGHTER RECEPTACLE CNSTR VENT SOL FUSE 56 CONTROL SOLENOID VALVE ASSEMBLY COOLANT HEATER (6.6L W/ AUXILIARY FUEL FIRED HEATER) DATA LINK CONNECTOR (DLC) ECM BATT FUSE 19 ELECTRONIC BRAKE CONTROL MODULE (EBCM) ENGINE CONTROL MODULE (ECM) EVAPORATIVE EMISSION (EVAP) VENT SOLENOID VALVE FCSM BATT FUSE 36 FOH MDL FUSE 35 FROM CMPS FUSE 19 (DIAGRAM 4 OF 5) FROM RUN FRT BLWR FUSE 74 FUEL PUMP CONTROL MODULE (5.3L) FUSIBLE LINK 1 FUSIBLE LINK 2 FUSIBLE LINK 3 FUSIBLE LINK 4 FUSIBLE LINK 5 (W/ DUAL GENERATOR GENERATOR GLOW PLUG CONTROL MODULE (GPCM) INSTRUMENT PANEL CLUSTER (IPC) (W/ ODOMETER SECURITY WIRING PROVISION (SEO)) INTAKE AIR HEATER (IAH) LTR/DLC FUSE 73 NCA WIRE PASSENGER COMPARTMENT FUSE BLOCK POWER RECEPTACLE POWER RECEPTACLE PROVISION IGNITION POWER PROVISION RELAY REAR PARKING ASSIST CONTROL MODULE RED WIRE RED/BLK WIRE RED/WHT WIRE RPA FUSE SEO TCM BATT FUSE 32 FUSE 27 STARTER MOTOR TO HEADLAMP HIGH BEAM RELAY (DIAGRAM 2 OF 5) TRAILER CONNECTOR TRANSMISSION CONTROL MODULE (TCM) AUTOMATIC TRANSMISSION ASSEMBLY TRLR WRG FUSE 11 TRLR WRG FUSE 42 UNDERHOOD JUNCTION BLOCK UPFITTER AUX 2 READING LAMPS FUSE 28 W/ ACTIVE BRAKE CONTROL W/ CIGAR LIGHTER W/ RV UPFITTER W/O RV UPFITTER W/ TRUCK TRAILER W/ W/ RV CUTAWAY UPFITTER UPFITTER W/O ACTIVE BRAKE CONTROL W/O CIGAR LIGHTER

BATTERY BLK WIRE BRN WIRE CHARGE AIR COOLER INLET TEMPERATURE SENSOR CHARGE AIR COOLER OUTLET TEMPERATURE SENSOR COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUSIBLE LINK 1 FUSIBLE LINK 4 GRY WIRE GRY/WHT WIRE HI SPD GMLAN SER DATA - HTR CTRL IAH COMM 1 IAH COMM 2 IAH CURRENT SIG IAH DIG SIG IAH FDBK SIG IAH HEART BEAT SIG IAH SW ON/OFF SIG IAH TEMP SIG IAH VOLT FEEDBACK SIG IAH VOLT SIG IGN 1 VOLT INTAKE AIR HEATER (BETWEEN INTAKE MANIFOLD TUBE, AIR COOLER OUTLET DUCT) LINE HTR CTRL LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MANIFOLD ABSOLUTE PRESSUE (MAP) SENSOR (ATTACHED TO INTAKE MANIFOLD TUBE) ORG/BLK WIRE ORG/WHT WIRE PLUG 1 CTRL PLUG 2 CTRL PLUG 3 CTRL PLUG 4 CTRL PLUG 5 CTRL PLUG 6 CTRL PLUG 7 CTRL PLUG 8 CTRL PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE PUMP HTR CTRL RED WIRE RED/WHT WIRE SENS 1 GND SENS 1 SPLY VOLT SENS 2 GND SENS 2 SPLY VOLT TAN WIRE TAN/BLK WIRE UNDERHOOD JUNCTION BLOCK WAKEUP SER DATA YEL WIRE

6 7 8 PNK WIRE AUXILIARY BATTERY BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE AIR COOLER INLET TEMPERATURE SENSOR (ON INTAKE MANIFOLD) CHARGE AIR COOLER OUTLET TEMPERATURE SENSOR (NEAR COOLANT SURGE TANK) COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE FUSIBLE LINK 1 FUSIBLE LINK 4 GRN WIRE GRN/WHT WIRE GRY WIRE GRY/WHT WIRE HI SPD GMLAN SER DATA - HTR CTRL IAH COMM 1 IAH COMM 2 IAH CURRENT FEEDBACK SIG IAH CURRENT SIG IAH DIG SIG IAH FDBK SIG IAH HEART BEAT SIG IAH SW ON/OFF SIG IAH TEMP FEEDBACK SIG IAH TEMP SIG IAH VOLT FEEDBACK SIG IAH VOLT SIG IGN 1 VOLT INTAKE AIR HEATER (BETWEEN INTAKE MANIFOLD TUBE, AIR COOLER OUTLET DUCT) LINE HTR CTRL LOWER RIGHT FRONT OF ENGINE) LT GRN WIRE MANIFOLD ABSOLUTE PRESSUE (MAP) SENSOR (ATTACHED TO INTAKE MANIFOLD TUBE) ORG/BLK WIRE ORG/WHT WIRE PLUG 1 CTRL PLUG 2 CTRL PLUG 3 CTRL PLUG 4 CTRL PLUG 5 CTRL PLUG 6 CTRL PLUG 7 CTRL PLUG 8 CTRL PNK 10 11 WIRE PNK 12 13 14 WIRE PNK WIRE PNK/BLK WIRE PNK/WHT WIRE POWER DISTRIBUTION SYSTEM PPL PPL/WHT WIRE PUMP HTR CTRL RED WIRE RED/WHT WIRE SENS 1 GND SENS 1 SPLY VOLT SENS 2 GND SENS 2 SPLY VOLT STARTER MOTOR TAN WIRE TAN/BLK WIRE UNDERHOOD JUNCTION BLOCK WAKEUP SER DATA WHT WIRE WHT/YEL WIRE YEL WIRE