Chevrolet Uplander I (2004-2008) computer data lines system Wiring diagrams

15 44 32 22 CLASS 2 DATA CC SIG SWITCH STOP LAMP VOLT 2 3 UART DATA (PRI) UART DATA (SEC) 27 16 28 39 38 10 VOLT REF BRAKE SEN SIG LOW REF STOP LAMP SPLY CLASS 2 DATA 44 12 PPL VSS LOW SIG VSS HIGH SIG 5 VOLT LOW REFERENCE APP SENSOR 1 SIG ACCELERATOR PEDAL POSITION (APP) SENSOR (ON ACCELERATOR BRACKET) BLK/WHT WIRE BODY CONTROL MODULE (BCM) BRAKE PEDAL POSITION SENSOR (ABOVE BRAKE PEDAL ASSEMBLY) BRN WIRE CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA CRUISE IND COMPUTER DATA LINES SYSTEM CRUISE CANCEL CRUISE CONTROL LEVER CRUISE/ SWITCH FUSE 9 DASH, BEHIND ACCESS PANEL) DK BLU WIRE DK GRN WIRE ETC FUSE 18 GROUND UART SERIAL DATA (SEC) STOP LAMP SPLY VOLT GRY WIRE GRY/BLK WIRE HOT IN RUN OR START HOT W/ PWR/ TRN RELAY ENERGIZED I/P FUSE BLOCK IGN INSTRUMENT PANEL CLUSTER (IPC) LOGIC LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK IGNITION 1 GROUND UART SERIAL DATA (PRI) WIRE PNK WIRE PPL RADIO VSS REAR OBJECT VSS SENSOR CONTROL MODULE (BEHIND RIGHT REAR INTERIOR BODY PANEL) RES+ SET- TAN WIRE THROTTLE ACTUATOR CONTROL MODULE (TAC) (LEFT SIDE OF INTAKE) UNDERHOOD FUSE BLOCK (IN UNDERHOOD COMPARTMENT, ABOVE RIGHT FRONT WHEEL WELL) VSS VSS APP SENSOR 2 SIG LOW REFERENCE 5 VOLT W/ TRAFFIC INFORMATION RECEIVER W/O TRAFFIC INFORMATION RECEIVER WHT/BLK WIRE YEL WIRE

15 29 7 39 CLASS 2 DATA CC SIG SWITCH STOP LAMP VOLT 27 16 28 39 38 10 VOLT REF BRAKE SEN SIG LOW REF STOP LAMP SPLY CLASS 2 DATA BODY CONTROL MODULE (BCM) BRAKE PEDAL POSITION SENSOR (ABOVE BRAKE PEDAL ASSEMBLY) BRN WIRE CLASS 2 SERIAL DATA CLASS 2 SERIAL DATA CRUISE IND COMPUTER DATA LINES SYSTEM CRUISE CANCEL CRUISE CONTROL LEVER CRUISE/ SWITCH FUSE 9 DASH, BEHIND ACCESS PANEL) DK GRN WIRE ENGINE CONTROL MODULE (ECM) GRY WIRE GRY/BLK WIRE HOT IN RUN OR START I/P FUSE BLOCK IGN INSTRUMENT PANEL CLUSTER (IPC) LOGIC LT GRN WIRE NCA WIRE ORG/ WIRE PNK WIRE PPL PPL VSS LOW SIG RADIO VSS REAR OBJECT VSS SENSOR CONTROL MODULE (BEHIND RIGHT REAR INTERIOR BODY PANEL) RES+ SET- STOP LAMP SUPPLY TAN WIRE THROTTLE ACTUATOR CONTROL MODULE (TAC) TRANSMISSION CONTROL MODULE (TCM) UNDERHOOD FUSE BLOCK (IN UNDERHOOD COMPARTMENT, ABOVE RIGHT FRONT WHEEL WELL) VSS VSS HIGH SIG W/ TRAFFIC INFORMATION RECEIVER W/O TRAFFIC INFORMATION RECEIVER YEL WIRE

3.9L 3.5L 40 20 17 12 REQ TORQUE SIG DEL TORQUE SIG ABS FUSE 13 ABS MOTOR FUSE 31 B + SOL VLV CTRL B+ PUMP MOTOR CONTROL BLK WIRE BLK/WHT WIRE BRAKE PRESSURE MODULATOR VALVE (BPMV) BRN WIRE CLASS 2 SER DATA CLASS 2 SER DATA LR WHEEL SPEED SENS LOW REF LR WHEEL SPEED SENS SIG COMPUTER DATA LINES SYSTEM DEL TORQUE SIG DK GRN WIRE DK GRN/WHT WIRE GRN WIRE HOT AT ALL TIMES I/P FUSE BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) IGN MAIN RELAY LATERAL ACCELEROMETER SIGNAL RF WHEEL SPEED SENS LOW REF LEFT FRONT INLET LEFT FRONT ISO- LATION (W/ TCS) LEFT FRONT PRIME (W/ TCS) LEFT REAR INLET LEFT REAR OUTLET LF WHEEL SPEED SENS SIG LF WHEEL SPEED SENS LOW REF LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK IGN 1 VOLT WIRE PNK WIRE PUMP MOTOR RED WIRE RED/BLK WIRE REQ TORQUE SIG RF WHEEL SPD SENS SIG RIGHT FRONT ISO- LATION RIGHT FRONT OUTLET RIGHT FRONT PRIME (W/ RIGHT LEFT FRONT INLET FRONT OUTLET RIGHT RIGHT REAR REAR INLET OUTLET SOLENOID VALVES STEERING WHEEL POS SIG A STEERING WHEEL POS SIG B STOP LAMP SUPPLY RR WHEEL SPD SENS SIG RR WHL SPD SEN LOW REF LOW REF TAN WIRE TAN/BLK WIRE TCS UNDERHOOD FUSE BLOCK (IN UNDERHOOD COMPARTMENT, ABOVE RIGHT FRONT WHEEL WELL) WHT WIRE YAW RATE SEN SIG YEL WIRE

ABS IND. B+ LOGIC BLK WIRE BLK/WHT WIRE BLU WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH) BRAKE PEDAL POSITION SENSOR (ABOVE BRAKE PEDAL ASSEMBLY) BRN WIRE BRN/WHT WIRE CLASS 2 SER DATA COMPUTER DATA LINES SYSTEM DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GRY WIRE GRY/BLK WIRE INSTRUMENT PANEL CLUSTER (IPC) LATERAL ACCELER- OMETER SIG LEFT FRONT WHEEL SPEED SENSOR (WSS) LEFT REAR WHEEL SPEED SENSOR (WSS) LOW REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE MESSAGE CENTER NCA WIRE ORG/ WIRE PNK WIRE RED WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) RIGHT REAR WHEEL SPEED SENSOR (WSS) STEERING WHEEL POS SIG A STEERING WHEEL POS SIG B STEERING WHEEL POSITION SENSOR (NEAR BOTTOM OF STEERING COLUMN) STOP LAMP SW SIG TAN WIRE TRACTION CONTROL OFF IND TRACTION CONTROL SWITCH UNDERHOOD FUSE BLOCK (IN UNDERHOOD COMPARTMENT, ABOVE RIGHT FRONT WHEEL WELL) WHT WIRE YAW RATE SEN SIG YEL WIRE

3.9L 3.5L 53 15 459 1049 33 15 RLY CTRL CLASS 2 DATA 57 37 21 380 2700 2751 31 4 7 SENS SIG A/C CLTCH FUSE 6 A/C CLTCH RELAY A/C COMPRESSOR CLUTCH A/C REQUEST IND CNTRL A/C REQUEST IND A/C REQUEST SWITCH CLASS 2 DATA IGN BLK WIRE COMPUTER DATA LINES SYSTEM DIODE 3 DK GRN WIRE DK GRN/WHT WIRE GRY WIRE HOT AT ALL TIMES HOT W/ IGN MAIN RELAY ENERGIZED HVAC CONTROL MODULE (IN DASH CENTER TRIM PANEL, BENEATH RADIO) IGN A/C REQ LOGIC LOW REF ORG/BLK WIRE UNDERHOOD FUSE BLOCK (IN UNDERHOOD COMPT, ABOVE RIGHT FRONT WHEEL WELL) WHT WIRE

1 2 3 4 VOLTAGE KEYLESS SIG ANTENNA SIG BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) CLASS 2 COMPUTER DATA LINES SYSTEM DELAYED LOCKING, DOOR(S) AJAR, LIFTGATE AJAR, KEY FOB LOW BATTERY DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR KEY SWITCH (W/ ANTI- THEFT SYSTEM) DRIVER DOOR LOCK SWITCH (MOUNTED ON GROUND GRY WIRE GRY/BLK WIRE HORNS SYSTEM HOT AT ALL TIMES I/P FUSE BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) INSTRUMENT PANEL CLUSTER (IPC) LOCK LOCK UNLOCK LOCK UNLOCK LEFT FRONT DOOR TRIM) LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MESSAGE CENTER ORG/ WIRE ORG/BLK WIRE PASSENGER DOOR LOCK SWITCH (MOUNTED ON RIGHT FRONT DOOR TRIM) PNK/BLK WIRE PPL RED WIRE RED/WHT WIRE RFA MDLS FUSE 7 SECURITY INDICATOR TAN WIRE TAN/WHT WIRE THEFT LIGHT EMITTING DIODE TRUNK/ LKS FUSE 1 UNLOCK WHT WIRE YEL WIRE YEL/BLK WIRE

1450 8 2622 552 GROUND SUPP VOLT SENS SIG LOW REF 2613 1038 SPEED CTRL CLASS 2 DATA 2614 2215 AUX MODE DR CTRL DR CTRL DR CTRL DOOR CTRL HI CTRL REC DR CTRL 5 VOLT REF PASS TEMPERATURE CONTROL SW (W/ AUXILIARY A/C) A/C REQUEST IND CNTRL A/C REQUEST IND A/C REQUEST SWITCH AUX BLWR MOTOR AUX SW LO REF MODE SIG 5 VOLT REF AUXILIARY MODE ACTUATOR (W/ REAR A/C) (IN REAR HVAC BATTERY IGNITION 1 PNK WIRE BLK WIRE BLK/WHT WIRE BLOWER MOTOR (BELOW RIGHT SIDE OF DASH, IN FRONT HVAC MODULE) BLOWER MOTOR RELAY BRN WIRE CLSTR/ HVAC FUSE 8 CNTRL SIG COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DR CTRL DR CTRL DOOR CTRL SPEED CTRL 2273 119 FRONT BLOWER MOTOR SWITCH FRT BLWR HI FUSE 34 FRT/ BLWR FUSE 27 GROUND GRY WIRE HOT AT ALL TIMES HOT W/ IGN MAIN RELAY ENERGIZED HOT W/ RUN RLY RELAY ENERGIZED HVAC CONTROL MODULE (IN DASH CENTER TRIM PANEL, BENEATH RADIO) HVAC MODULE) BLOWER MOTOR RESISTOR ASSEMBLY HVAC/ RPA/ CRUISE FUSE 17 I/P FUSE BLOCK (RIGHT SIDE OF DASH, BEHIND ACCESS PANEL) IGN IGN A/C REQUEST LO REF LO REF CNTRL SIG LOGIC LT BLU WIRE MODE SWITCH MODULE, BEHIND LEFT REAR INTERIOR BODY PANEL) MOTOR CTRL OFF ORG/ WIRE PNK WIRE PPL RECIRCULATION ACTUATOR (ABOVE BLOWER MOTOR, ON RIGHT SIDE OF FRONT HVAC MODULE) RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT AIR TEMPERATURE ACTUATOR (W/ AUXILIARY A/C) SPEED 3 REQ SPEED 2 REQ SPEED 1 REQ MOTOR OFF REQ HVAC AUX CNTRL TAN WIRE TAN/BLK WIRE UNDERHOOD FUSE BLOCK (IN UNDERHOOD COMPT, ABOVE RIGHT FRONT WHEEL WELL) WHT WIRE WHT/BLK WIRE YEL WIRE

3.9L 3.5L 49 57 37 21 48 31 4 7 RLY CTRL SENS SIG 53 54 15 33 50 15 RLY CTRL RLY CTRL CLASS 2 DATA A/C CLTCH FUSE 6 A/C CLTCH RELAY A/C COMPRESSOR CLUTCH A/C OFF FOR ENGINE PROTECTION ENGINE COOLANT HOT AUX FAN SPEED SELECT IGN IGN AUX TEMP SELECT LOGIC AUXILIARY BLOWER MOTOR (W/ REAR A/C) (BEHIND LEFT REAR INTERIOR BODY PANEL) AUXILIARY BLOWER MOTOR CONTROL MODULE (W/ REAR A/C) (IN REAR HVAC MODULE, BEHIND BLK WIRE BRN WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DIGITAL VIDEO DISC (DVD) PLAYER (IF EQUIPPED) DIODE 3 DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROLS SYSTEM FAN 1 FUSE 29 FAN 1 RELAY FAN 2 FUSE 33 FAN 2 RELAY FAN 3 RELAY FAN SPEED SWITCH FUSE 26 GRN WIRE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT W/ IGN MAIN RELAY ENERGIZED INSTRUMENT PANEL CLUSTER CLASS 2 SERIAL DATA LEFT COOLING FAN (BEHIND LEFT SIDE OF RADIATOR) LEFT REAR INTERIOR BODY PANEL) LOGIC LOW REF LT BLU WIRE MESSAGE CENTER ORG/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (3.5L) ENGINE CONTROL MODULE (ECM) (3.9L) RED WIRE RIGHT COOLING FAN (BEHIND RIGHT SIDE OF RADIATOR) RR BLWR/ RUN WIRE TEMP SELECT SWITCH UNDERHOOD FUSE BLOCK (IN UNDERHOOD COMPT, ABOVE RIGHT FRONT WHEEL WELL) WHT WIRE YEL WIRE

1589 1884 CRUISE CONTROL SYSTEM 389 625 5069 STARTING/CHARGING SYSTEM 5 VOLT REF A/C PRESS SIG STOP LAMP SW A/C CLUTCH RELAY AIR CONDITIONING SYSTEM BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) BRN WIRE BRN/WHT WIRE CNSTR/ VENT FUSE 19 COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP CANISTER VENT SOLENOID (ABOVE FUEL TANK) EVAP VENT SOL FRT WSW FUSE 24 FUEL PUMP RELAY FUEL PUMP, SENDER ASSEMBLY (TOP OF FUEL TANK) FUEL TANK PRESS FUEL TANK PRESSURE SENSOR (TOP OF FUEL TANK) GRN WIRE GRY WIRE HIGH FAN HOT AT ALL TIMES I/P FUSE BLOCK (RIGHT SIDE OF DASH) IGNITION 3 IGNITION 1 BATTERY IGNITION SWITCH INSTRUMENT PANEL CLUSTER LOCK LOW FAN LT GRN WIRE MALFUNCTION INDICATOR LAMP (MIL) MIL CONTROL LOW REF LOW REF ORG/BLK WIRE PNK 1 2 WIRE PNK 4 5 WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT SIDE OF ENGINE COMPT, IN AIR CLEANER ASSEMBLY) PPL PPL FUEL LEVEL SIG CRUISE SIG RED WIRE RED/WHT WIRE RUN WIRE SERIAL DATA TAN WIRE TOWARD RIGHT SIDE OF DASH) UNDERHOOD FUSE BLOCK UNDERHOOD FUSE BLOCK (ABOVE RIGHT FRONT WHEEL WELL) VEHICLE SPEED SIG STARTER ENABLE PCM RELAY WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

4 5 6 PNK PNK WIRE 5 VOLT REF 7 8 PNK WIRE A/C SENS SIG AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES BLK WIRE BLK/WHT WIRE BRAKES ANTI-LOCK BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DELI TORQUE SIG DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECT SENS SIG ENGINE CONTROL MODULE ENGINE OIL LEVEL SWITCH (BASE OF OIL PAN) GEN CYCLE SIG GEN TURN SIG GRY WIRE LINES SYSTEM COMPUTER DATA LO SPEED FAN LOW REF LT BLU/WHT WIRE LT GRN WIRE MAP SENSOR SIG OIL LEVEL SIG ORG/ WIRE ORG/BLK WIRE OUT PUT SIG PARK/NEUT SIG PNK PNK 1 2 WIRE PNK PNK 6 7 8 WIRE PNK WIRE PNK/BLK WIRE RED WIRE REQ TORQUE SIG SENS SIG SERIAL DATA SYSTEM SYSTEM STARTING/CHARGING TAN WIRE TAN/BLK WIRE VARIABLE CTRL WHT WIRE YEL WIRE YEL/BLK WIRE