Chevrolet TrailBlazer I (2001-2006) serial data Wiring diagrams

5.3L 4.2L ABS FUSE 33 ANTI-LOCK INDICATOR BLK WIRE BODY CONTROL MODULE (BCM) (BENEATH LEFT REAR SEAT, ON REAR FUSE BLCK) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER FLUID RESERVOIR) BRAKE FUSE 51 BRAKE INDICATOR BRN WIRE CRUISE CONTROL SYSTEM PPL PPL DK GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START IGN 3 ABS PUMP IGN E FUSE 22 INSTRUMENT PANEL CLUSTER LEFT FRONT WHEEL SPEED SENSOR LF SENS LOW REF RF SENS SIG TCC BRAKE SW LT BLU WIRE LT GRN WIRE ORG/ WIRE PNK WIRE PPL REAR FUSE BLOCK (BELOW LEFT REAR SEAT) RED WIRE RIGHT FRONT WHEEL SPEED SENSOR SERIAL DATA SERIAL DATA LVL SENS SIG LF SENS SIG RF SEN LOW REF VSS PPL STOP LAMP SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) IPC/DIC FUSE 24 VEHICLE SPEED SIGNAL YEL WIRE YEL/BLK WIRE

5.3L 4.2L ABS FUSE 33 ABS PUMP ANTI-LOCK INDICATOR BLK WIRE BODY CONTROL MODULE (BCM) (BENEATH LEFT REAR SEAT, ON REAR FUSE BLOCK) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER FLUID RESERVOIR) BRAKE FUSE 51 BRAKE INDICATOR BRN WIRE BRN/WHT WIRE CRUISE CONTROL SYSTEM PPL PPL DELIVERED TORQUE SIGNAL DK GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HVAC 1 FUSE 39 IGN E FUSE 22 IGNITION 3 LF WHL SPD SENS REF RF WHL SPD SENS SIG DELIVERED TORQUE SIG INSTRUMENT PANEL CLUSTER LEFT FRONT WHEEL SPEED SENSOR LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PPL PPL/WHT WIRE REAR FUSE BLOCK (BELOW LEFT REAR SEAT) RED WIRE REQUESTED TORQUE SIGNAL RIGHT FRONT WHEEL SPEED SENSOR SERIAL DATA STOP LAMP SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) TAN WIRE TAN/BLK WIRE TRAC DISABLE TELLTALE TRACTION ACTIVE INDICATOR TRACTION CONTROL SWITCH TRACTION DISABLE SWITCH TRACTION DISABLED INDICATOR UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) IPC/DIC FUSE 24 VEHICLE SPEED SIGNAL WHT WIRE YEL WIRE YEL/BLK WIRE

5.3L 4.2L A/C COMPRESSOR CLUTCH A/C FUSE 30 A/C LOW PRESSURE SWITCH (AT RIGHT REAR OF ENG COMPT, ON ACCUMULATOR) A/C PRESS SIG A/C REFRIGERANT PRESSURE SENSOR (ON HIGH PRESSURE LINE NEAR A/C COMP) A/C RELAY 44 AMBIENT LIGHT SENS BLK WIRE BODY CONTROL MODULE (BENEATH LEFT REAR SEAT, ON REAR FUSE BLOCK) COMP RLY CNTRL COOLING FAN COOLING FAN RELAY DATA LINK CONNECTOR (ON BOTTOM OF LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENG FAN FUSE 20 GRY WIRE GRY/WHT WIRE HALL SENSOR HIGH SPD MAF HOT AT ALL TIMES HOT IN RUN OR START IGN E FUSE 22 LOW REF LOW REFERENCE LT BLU/BLK WIRE LT GRN WIRE LT SUNLOAD SENS SIG ORG/ WIRE PPL RED/BLK WIRE RT SUNLOAD SENS SIG SERIAL DATA UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE

5.3L 4.2L A/C COMPRESSOR CLUTCH A/C FUSE 30 A/C LOW PRESSURE SWITCH (AT RIGHT REAR OF ENG COMPT, ON ACCUMULATOR) A/C PRESS SIG A/C REFRIGERANT PRESSURE SENSOR (ON HIGH PRESSURE LINE NEAR A/C COMP) A/C RELAY 44 AMBIENT LIGHT SENS AUXILIARY BLOWER MOTOR (W/ REAR A/C) (BELOW CENTER OF DASH) AUXILIARY CONSOLE MODE ACTUATOR (W/ REAR A/C) (BELOW CENTER OF DASH) AUXILIARY HVAC CONTROL MODULE BATT CLASS 2 DATA GROUND AUX MODE DR AUX BLWR HI SPD AUX BLWR LO SPD BLK WIRE BODY CONTROL MODULE (BENEATH LEFT REAR SEAT, ON REAR FUSE BLOCK) BRN WIRE COMP RLY CNTRL COOLING FAN DATA LINK CONNECTOR (ON BOTTOM OF LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENG FAN FUSE 20 FAN RELAY 45 GRY WIRE GRY/WHT WIRE HALL SENSOR HIGH SPD MAF HOT AT ALL TIMES HOT IN RUN OR START IGN E FUSE 22 LOW REF LOW REFERENCE LT BLU/BLK WIRE LT GRN WIRE LT SUNLOAD SENS SIG MODE OFF (W/ REAR A/C) ORG/ WIRE PPL RED/BLK WIRE RT SUNLOAD SENS SIG SERIAL DATA UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ REAR A/C WHT WIRE WHT/BLK WIRE

13 12 34 72 TR SW P TR SW B 4.2L 5.3L BACKUP FUSE 27 BACKUP LAMP BATTERY B/U LMP VOLT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (BENEATH LEFT REAR SEAT, ON REAR FUSE BLOCK) DK GRN WIRE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START LEFT TAILLAMP CIRCUIT BOARD LT GRN WIRE MIRRORS SYSTEM (AUTOMATIC DAY/ NIGHT MIRROR) NCA WIRE PARK/ NEUTRAL POSITION SWITCH PARK/NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANSMISSION, ABOVE FLUID PAN) PNK WIRE REAR FUSE BLOCK (BELOW LEFT REAR SEAT) REAR FUSE BLOCK (BELOW LEFT REAR SEAT) TBC 5 FUSE 32 RIGHT TAILLAMP BACKUP LAMP CIRCUIT BOARD SER DATA SERIAL DATA TR SW A TR SW C TRAILER CONNECTOR (LOWER LEFT SIDE OF ENGINE) TRLR B/U FUSE 4 UNDER- HOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

5.3L 4.2L A/C COMPRESSOR CLUTCH A/C FUSE 30 A/C LOW PRESSURE SWITCH (AT RIGHT REAR OF ENG COMPT, ON ACCUMULATOR) A/C PRESS SIG A/C REFRIGERANT PRESSURE SENSOR (ON HIGH PRESSURE LINE NEAR A/C COMP) A/C RELAY 44 BLK WIRE BLK/WHT WIRE BRN WIRE COMP RLY CNTRL DATA LINK CONNECTOR (ON BOTTOM OF LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND A/C LOW PRESS SW IGN 3 POWER GROUND CLASS 2 A/C COMP STATUS 204 341 4340 GRY WIRE HOT AT ALL TIMES HOT IN HOT IN RUN OR START HVAC 1 FUSE 39 HVAC CONTROL MODULE HVAC-B FUSE 36 IGN E FUSE 22 LOW REF LT GRN WIRE ORG/ WIRE PPL PPL REAR FUSE BLOCK (BELOW LEFT REAR SEAT) RED/BLK WIRE RUN WIRE SERIAL DATA UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE

BAT SPLY VOLT PPL BLK WIRE BRN WIRE COIL COMPUTER DATA LINES SYSTEM DRIVER DOOR MODULE (DDM) (BELOW DRIVER DOOR SWITCH PANEL) DRIVER OUTSIDE REARVIEW MIRROR EGM 2 LGM 2 FUSE 3 (XUV) (EXCEPT XUV) FRONT PASSENGER DOOR MODULE (FPDM) (BELOW FRONT PASSENGER DOOR SWITCH PANEL) GRD HTR HOT AT ALL TIMES HVAC CONTROL MODULE (CENTER OF DASH) LT BLU WIRE NCA WIRE ORG/ WIRE PASSENGER OUTSIDE REARVIEW MIRROR PPL PPL EXCEPT XUV R DEF REAR FUSE BLOCK (BELOW LEFT REAR SEAT) REAR WINDOW DEFOGGER GRID REAR WINDOW DEFOGGER GRID SERIAL DATA TAN WIRE WHT WIRE XUV

5.3L 4.2L A/C COMPRESSOR CLUTCH A/C FUSE 30 A/C LOW PRESSURE SWITCH (AT RIGHT REAR OF ENG COMPT, ON ACCUMULATOR) A/C PRESS SIG A/C REFRIGERANT PRESSURE SENSOR (ON HIGH PRESSURE LINE NEAR A/C COMP) A/C RELAY 44 BLK WIRE COMP RLY CNTRL COOLING FAN DATA LINK CONNECTOR (ON BOTTOM OF LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENG FAN FUSE 20 FAN RELAY GRY WIRE GRY/WHT WIRE HALL SENSOR HIGH SPD MAF HOT AT ALL TIMES HOT IN RUN OR START IGN E FUSE 22 LOW REF LT GRN WIRE ORG/ WIRE PPL RED/BLK WIRE SERIAL DATA UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE WHT/BLK WIRE

1 4 6 7 IGN VOLTAGE AUX HVAC ENABLE AUX DR MTR CNTRL GROUND 5.3L 4.2L A/C COMPRESSOR CLUTCH A/C FUSE 30 A/C LOW PRESSURE SWITCH (AT RIGHT REAR OF ENG COMPT, ON ACCUMULATOR) A/C PRESS SIG A/C REFRIGERANT PRESSURE SENSOR (ON HIGH PRESSURE LINE NEAR A/C COMP) A/C RELAY 44 AUXILIARY CONSOLE MODE ACTUATOR (W/ REAR A/C) (UNDER LOWER CONSOLE) AUXILIARY HVAC CONTROL MODULE BI LVL BLK WIRE BRN WIRE COMP RLY CNTRL COOLING FAN DATA LINK CONNECTOR (ON BOTTOM OF LEFT SIDE OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENG FAN FUSE 20 FAN RELAY 45 GRY WIRE GRY/WHT WIRE HALL SENSOR HIGH SPD MAF HOT AT ALL TIMES HOT IN RUN OR START IGN E FUSE 22 LO REF FLOOR UPPER LOW REF LT GRN WIRE PPL RED/BLK WIRE SERIAL DATA UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ REAR A/C WHT WIRE WHT/BLK WIRE YEL WIRE

59 58 58 59 DATA DATA BATTERY GROUND SERIAL DATA SENSOR SIG GROUND BLK WIRE BODY CONTROL MODULE (BENEATH LEFT REAR SEAT) COMPUTER DATA LINES DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL DK GRN WIRE GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER LT GRN WIRE NCA WIRE ORG/ WIRE PASSLOCK SENSOR (AT IGNITION SWITCH) PPL REAR FUSE BLOCK (BELOW LEFT REAR SEAT) RED WIRE RED/WHT WIRE RTN DATA REF SECURITY IND SENSOR RET SERIAL DATA SPLICE PACK TBC 1 FUSE 31 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE