GMC Savana Camper Special G3500 (1996-2011) low ref Wiring diagrams

ABS IND. BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE IND BRAKE PRESSURE DIFFERENTIAL SWITCH (ON BRAKE VALVE, NEAR FRONT OF EBCM) BRN WIRE CAUTION IND DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE GROUND GRY WIRE HEAVY DUTY HOT IN RUN OR START IGN 3 VOLTAGE INSTRUMENT PANEL CLUSTER LIGHT DUTY LOGIC LOW REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE NOT READY IND ORG/BLK WIRE PCM IGN 1 FUSE 38 PNK 1 2 WIRE PNK WIRE PPL SENSOR SELF TEST SIG CIR STEERING WHEEL POS MARKER PULSE SIG STEERING WHEEL POSITION SENS SIG 1 STEERING WHEEL POSITION SIG A STEERING WHEEL POSITION SIG B STEERING WHEEL SPEED/ POSITION SENSOR (AT BASE OF STEERING COLUMN) TRACTION CONTROL SWITCH UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE YAW RATE FREQUENCY YAW, LATERAL ACCELERATION SENSOR (UNDER FRONT PASSENGER SEAT) YEL WIRE

1589 2759 PPL 31 16 LOW REF SENS SIG PPL 4.3L 4.8L/5.3L/6.0L 6.6L 50 41 36 35 SENS SIG BLK WIRE BLK/WHT WIRE BRAKE BOOSTER FLUID FLOW ALARM SWITCH (W/ BRAKE WARNING INDICATOR) BRAKE BOOSTER FLUID PRESSURE ALARM SWITCH (IN POWER STEERING PUMP INLET HOSE) BRAKE FLUID LEVEL SWITCH (AT LEFT REAR OF ENGINE COMPT) BRAKE PRESSURE BRN WIRE CARGO DOOR LATCH ASSEMBLY (W/ CARGO/PASSENGER) (IN RIGHT REAR CARGO DOOR) COMPUTER DATA LINES SYSTEM DIFFERENTIAL SWITCH (ON BRAKE VALVE, NEAR FRONT OF EBCM) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER DOOR LATCH ASSEMBLY (AT REAR OF DRIVER DOOR) DRIVER INFORMATION CENTER (DIC) SWITCH ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE CONTROLS SYSTEM ENGINE OIL LEVEL SWITCH (ON LEFT SIDE OF OIL PAN) ENGINE OIL PRESSURE (EOP) SENSOR (EXCEPT 6.6L: ON TOP REAR OF ENGINE) EXCEPT 5.3L 5.3L FUEL LEVEL SENSOR (ON LEFT FRAME FUEL PUMP, SENDER ASSEMBLY (ON FUEL TANK) GRY WIRE GRY/BLK WIRE ILLUMI- NATION IND CTRL LEFT REAR SIDE DOOR JAMB SWITCH (W/ HINGED) (AT LEFT "B" PILLAR) LIGHT DUTY LOW REF LT BLU/BLK WIRE PASSENGER DOOR LATCH ASSEMBLY (AT REAR OF FRONT PASSENGER DOOR) PERSON- ALIZATION PNK WIRE PNK/BLK WIRE PPL PPL HEAVY DUTY PPL PNK WIRE RAIL) RIGHT REAR SIDE DOOR JAMB SWITCH (W/ CARGO/PASSENGER) (AT RIGHT "B" PILLAR) SENS SIG LOW REF SET/ RESET SWITCH SIG DATA LINK RESISTOR 44 43 TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRIP/ FUEL VEHICLE INFO W/ BRAKE WARNING INDICATOR SYSTEM WATER IN-FUEL SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

2501 2500 2501 2500 COMPUTER DATA LINES SYSTEM A/C LOW PRESSURE SWITCH (ON SIDE OF ACCUMULATOR) AUXILIARY AIR TEMPERATURE ACTUATOR AUXILIARY BLOWER MOTOR (ON AUXILIARY HVAC) AUXILIARY BLOWER MOTOR MEDIUM SPEED RELAY AUXILIARY BLOWER MOTOR RESISTOR (ON AUXILIARY HEATER MOTOR) AUXILIARY HVAC MODULE) AUXILIARY MODE ACTUATOR BLK WIRE BREAKOUT) BREAKOUT) (W/ RV UPFITTER: IN BODY HARNESS, BRN WIRE COOLANT HEATER BLOWER MOTOR COOLANT HEATER COMBUSTION SENSOR COOLANT HEATER CONTROL MODULE COOLANT HEATER GLOW PLUG COOLANT HEATER OVERHEAT TEMPERATURE SENSOR COOLANT HEATER AIR TEMPERATURE SENSOR COOLANT HEATER TEMPERATURE SENSOR DK BLU WIRE DK BLU/LT GRN WIRE FOH MDL (D) FUSE 35 FROM AUXILIARY BLOWER MOTOR BREAKOUT) FROM AUXILIARY BLOWER MOTOR CONNECTOR BREAKOUT) FUEL PUMP GND SERIAL - SERIAL + SERIAL - SERIAL + GRN/RED WIRE GRY WIRE HOT AT ALL TIMES LOGIC LOW REF LT BLU WIRE LT GRN WIRE ORG/ WIRE PROVISIONAL RED/WHT WIRE SERIAL DATA TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VOLT VOLT GND WHT WIRE YEL WIRE

12 13 34 28 27 25 8 65 43 44 59 36 63 66 46 PRESS SENS LOW REF 19 21 69 14 71 CLUTCH CTRL CLUTCH CTRL SPEED SIG 21 22 58 4 24 40 SENS SIG LOW REF 6.6L 4.3L 4.8L, 5.3L, 6.0L A/C CMPRSR FUSE 18 A/C CMPRSR RELAY 40 A/C COMPRESSOR CLUTCH A/C REFRIGERANT PRESSURE SENSOR A/C SERIAL REQUEST DATA SIG BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRN/WHT WIRE CLUTCH RLY CTRL COMPUTER DATA LINES SYSTEM COOLING FAN ASSEMBLY (6.6L) (BEHIND RADIATOR) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR FAN CLTCH (EV) FUSE 63 FAN LOGIC CLTCH (D) RELAY 50 (6.6L) GMLAN - GMLAN + GMLAN DATA GRY WIRE HOT AT ALL TIMES HOT W/ PWR/TRN RELAY 49 ENERGIZED LOW REF LT BLU WIRE LT GRN WIRE OF ENGINE) ORG/BLK WIRE REF SIDE OF ENGINE COMPT) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT W/ AUXILIARY FUEL FIRED HEATER W/O AUXILIARY FUEL FIRED HEATER WHT WIRE WHT/BLK WIRE YEL WIRE

A/C LOW PRESSURE SWITCH (ON SIDE OF ACCUMULATOR) AUXILIARY AIR TEMPERATURE ACTUATOR AUXILIARY BLOWER MOTOR (ON AUXILIARY HVAC) AUXILIARY BLOWER MOTOR MEDIUM SPEED RELAY AUXILIARY BLOWER MOTOR RESISTOR ASSEMBLY (ON AUXILIARY AUXILIARY HVAC MODULE) AUXILIARY MODE ACTUATOR BLK WIRE BLOWER MOTOR BREAKOUT) BREAKOUT) BREAKOUT) (W/ RV UPFITTER: IN BODY HARNESS, BRN WIRE COMPUTER DATA LINES SYSTEM COOLANT HEATER BLOWER MOTOR COOLANT HEATER COMBUSTION SENSOR COOLANT HEATER CONTROL MODULE COOLANT HEATER GLOW PLUG COOLANT HEATER OVERHEAT TEMPERATURE SENSOR COOLANT HEATER AIR TEMPERATURE SENSOR COOLANT HEATER TEMPERATURE SENSOR DK BLU WIRE DK BLU/LT GRN WIRE FOH MDL (D) FUSE 35 FROM AUXILIARY BLOWER MOTOR CONNECTOR BREAKOUT) FUEL PUMP GND SERIAL - SERIAL + SERIAL - SERIAL + GRN/RED WIRE GRY WIRE HEATER MOTOR HOT AT ALL TIMES LOGIC LOW REF LT BLU WIRE LT GRN WIRE ORG/ WIRE PROVISIONAL RED/WHT WIRE SERIAL DATA TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) VOLT VOLT GND WHT WIRE YEL WIRE

12 13 34 28 27 25 8 65 43 44 59 36 63 66 46 PRESS SENS LOW REF 19 21 69 14 71 CLUTCH CTRL CLUTCH CTRL SPEED SIG 21 22 58 4 24 40 SENS SIG LOW REF 6.6L 4.3L 4.8L, 5.3L, 6.0L A/C CMPRSR FUSE 18 A/C CMPRSR RELAY 40 A/C COMPRESSOR CLUTCH A/C REFRIGERANT PRESSURE SENSOR A/C SERIAL REQUEST DATA SIG BLK WIRE BODY CONTROL MODULE (BCM) (BEHIND LOWER RIGHT SIDE OF DASH) BRN/WHT WIRE CLUTCH RLY CTRL COMPUTER DATA LINES SYSTEM COOLING FAN ASSEMBLY (6.6L) (BEHIND RADIATOR) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT SIDE OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE (ECT) SENSOR FAN CLTCH (EV) FUSE 63 FAN LOGIC CLTCH (D) RELAY 50 (6.6L) GMLAN - GMLAN + GMLAN DATA GRY WIRE HOT AT ALL TIMES HOT W/ PWR/TRN RELAY 49 ENERGIZED LOW REF LT BLU WIRE LT GRN WIRE OF ENGINE) ORG/BLK WIRE REF SIDE OF ENGINE COMPT) TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (ON LEFT W/ AUXILIARY FUEL FIRED HEATER W/O AUXILIARY FUEL FIRED HEATER WHT WIRE WHT/BLK WIRE YEL WIRE

22 23 PNK WIRE 2755 1551 1670 1666 1551 1668 1665 1174 LOW REF GND 625 1551 START RLY CTRL GND 771 420 776 PRND A SIG STP LP SW SIG PRND P SIG PPL 772 633 410 1020 PRND B SIG CMP SIG ECT SIG IGN 0 VOLT INJ 5 CTRL INJ 8 CTRL ABS SYSTEM B+ CLASS 2 DATA BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENG 1 FUSE 23 ENG 2 FUSE 21 FROM UNDERHOOD PASS- THROUGH GROMMET BREAKOUT) FUSE 39 FUSE 40 GRY WIRE HOT AT ALL TIMES HOT IN ACCY, RUN, START HOT IN RUN, START IGN 0 FUSE INJ 1 CTRL INJ 6 CTRL INJ 3 CTRL INJ 2 CTRL INJ 7 CTRL INJ 4 CTRL INJECTORS KS 1 SIGNAL KS 2 SIG CKP SIG REQ TORQ SIG UART SER DATA UART SER DATA LOW REF LOW REF GND 1551 1671 1667 1551 1669 1664 LOW REF LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OIL LEV SW SIG ORG/ WIRE ORG/BLK WIRE PCM BATT FUSE 2 PNK 1 2 3 4 5 WIRE PNK PNK 28 29 WIRE PNK PNK 6 7 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (IN ENGINE COMPT, ON LEFT INNER FENDER) PPL PPL PPL PPL/WHT WIRE RANGE B RANGE C IGN 1 VOLT B+ LOW REF RED/WHT WIRE STARTING/ CHARGING SYSTEM TAN WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) W/ ACTIVE BRAKE CONTROL WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SOL 13 14 PNK WIRE 15 16 17 18 19 20 21 22 PPL 16 17 18 19 20 21 22 23 PPL 2-3 SOL 24 25 26 PNK WIRE 3-2 SOL A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH ACCELERATOR PEDAL POSITION SENSOR (UNDER LEFT SIDE OF DASH) APPS 1 SIG APPS 2 SIG AUTOMATIC TRANSAXLE BLK WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (TOP CENTER REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE OIL PRESSURE (EOP) SENSOR (TOP REAR OF ENGINE) FUEL TANK PRESSURE SENSOR (ON FUEL TANK) GRY DK GRN WIRE GRY WIRE HOT IN RUN, START IGN E FUSE 22 LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN GRY WIRE LT GRN WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE REV SENSOR 1 SENSOR 2 STOP LAMP SWITCH (ABOVE BRAKE PEDAL) TAN (OR BLK) WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOL TCC SOL TFT SENSOR THROTTLE ACTUATOR CONTROL MODULE (AT LEFT REAR OF ENGINE COMPT) UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

16 17 18 19 20 21 22 23 PPL 21 22 23 24 25 27 26 28 PPL 24 25 26 PNK WIRE 29 30 31 PNK WIRE AUTOMATIC TRANSMISSION INPUT SHAFT SPEED SENSOR BLK WIRE BLK/WHT WIRE BRN WIRE CAN VENT FUSE 34 CHMSL VLT CRUISE CONTROL SYSTEM CRUISE ON SW DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IGN IGN 1 VLT LOW REF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK 1 2 3 4 5 6 WIRE PNK 7 8 WIRE PNK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE RED/WHT WIRE RES/ACCEL SET/COAST SIDE OF TRANSMISSION) SIGNAL TAC MTR CNTL TAC MTR CNTL 1 TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE POSITION SENSOR 1 THROTTLE POSITION SENSOR 2 TPS 1 SIG TPS 2 SIG UART SER DATA UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

397 552 5929 CRUISE CONTROL SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE) COOLANT LEV SIG HI IDLE SW COOLANT LEVEL SWITCH CRUISE CONTROL SYSTEM CRUISE ON LOW REF LOW REF CRUISE SET DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE EGR VAL POS SIG ECT SENSOR SIG ENGINE CONTROL MODULE (ECM) ENGINE COOLANT TEMPERATURE (ECT) SENSOR (TOP OF ENGINE, NEAR THERMOSTAT HOUSING) ENGINE OIL LEVEL SWITCH (LEFT SIDE OF OIL PAN) FUEL PRESS INJ + GROUP 2 GRY WIRE GRY/BLK WIRE IAT SENSOR 2 SIG IAT SENSOR SIG LOW REF LOW REF CMP SENSOR SIG LOW REF CRANK VOLT PPL LOW REF TUR VANE POS INJ + GROUP 3 INJ 5 INJ 4 LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE OIL LEVEL SW SIG CRUISE RESUME LOW REF OIL PRESS SIG ORG/ WIRE ORG/BLK WIRE PARTIAL PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE STARTING/CHARGING SYSTEM TAN WIRE TAN/WHT WIRE WHT WIRE YEL WIRE YEL/BLK WIRE