Chevrolet TrailBlazer I (2001-2006) (lower left side of engine) Wiring diagrams

49 20 21 VEHICLE SPEED SIG VSS LO VSS HI 5 VOLT REF APP SENSOR 1 LOW REF 5 VOLT REF APP SENSOR 2 LOW REF ACCELERATOR PEDAL POSITION SENSOR (ABOVE ACCELERATOR PEDAL, ON BRACKET) BLK WIRE BLK/WHT WIRE BRN WIRE CLOSE DK BLU WIRE DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (ON INNER LEFT FRAME RAIL, BESIDE TRANSMISSION) ETC FUSE 23 GRY WIRE GRY/BLK WIRE HOT IN RUN AND START HOT IN RUN REAR FUSE BLOCK (BELOW LEFT REAR SEAT) HVAC I FUSE 39 IGN E FUSE 22 LT BLU WIRE LT BLU/BLK WIRE LT GRN/BLK WIRE ON/OFF SWITCH ORG/ WIRE PNK PPL WIRE POWERTRAIN CONTROL MODULE (NEAR LOWER LEFT FRONT OF ENGINE) PPL PPL 1704 450 PPL CRUISE RELEASE PPL CRUISE RELEASE VEHICLE SPEED SIG PPL PNK WIRE PPL/WHT WIRE RES/ACCEL SWITCH SET/COAST SWITCH TAN WIRE TCC/BRAKE SWITCH (ABOVE BRAKE PEDAL, ON BRACKET) THROTTLE ACTUATOR CONTROL MODULE (ATTACHED TO THROTTLE SHAFT) THROTTLE BODY (THROTTLE ACTUATOR CONTROL MOTOR) TURN SIGNAL/ MULTIFUNCTION SWITCH VEH STOP FUSE 34 VEHICLE SPEED SENSOR (VSS) (ON LEFT REAR OF TRANSFER CASE) WHT WIRE WHT/BLK 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

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

57 60 CLUTCH CNTRL LOW REF BLK WIRE COOLING FAN DK BLU WIRE FAN FUSE 20 FAN RELAY 45 FAN SPEED SIG GROUND GRY WIRE GRY/WHT WIRE HALL SENSOR HOT IN RUN OR START 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 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

2 3 4 PNK PNK WIRE AIR FUSE 56 AIR SOL FUSE 54 AIR SOL RELAY 55 BLK WIRE BRN WIRE DK GRN/WHT WIRE ENG I FUSE 26 ENGINE OIL PRESSURE SWITCH (RIGHT SIDE OF ENGINE BLOCK) EVAPORATIVE EMISSION CANISTER PURGE SOLENOID (ON THROTTLE BODY) EVAPORATIVE EMISSION CANISTER VENT SOLENOID (AT REAR OF FUEL TANK) F/PMP RELAY 41 FUEL PUMP/ SENDER ASSEMBLY (IN FUEL TANK) GRY WIRE HOT AT ALL TIMES HOT IN RUN, START LT GRN/BLK WIRE NCA WIRE ORG/BLK WIRE PCM B FUSE 10 PNK PNK 2 3 WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED WIRE SECONDARY AIR INJECTION PUMP SECONDARY AIR INJECTION PUMP RELAY SECONDARY AIR INJECTION SOLENOID TAN/BLK WIRE UNDER- HOOD FUSE BLOCK VEHICLE SPEED SENSOR (LEFT REAR OF TRANSFER CASE) WHT WIRE

1-2 SHIFT SOL CTRL 2-3 SHIFT SOL CTRL 3-2 SHIFT SOL ANTI-LOCK BRAKES SYSTEM BLK WIRE BLK/WHT WIRE BRN WIRE CAM POS SOL HI CAMSHAFT ACTUATOR SOLENOID ASSEMBLY (RIGHT FRONT OF CYLINDER HEAD) CKP SENS SIG DELIV TORQUE SIG DK GRN WIRE DK GRN/WHT WIRE ECT SENS SIG ENGINE COOLANT TEMPERATURE SENSOR (LEFT FRONT OF ENGINE BLOCK) EVAP CAN PRG CTL EVAP CAN VENT FUEL INJ 1 FUEL INJ 2 FUEL INJ 3 FUEL INJ 4 FUEL INJ 5 FUEL INJ 6 FUSE 29 10 GFD CYC SIG GROUND GRY WIRE HEATED OXYGEN SENSOR 1 (ON EXHAUST MANIFOLD, RIGHT SIDE OF ENGINE) HEATED OXYGEN SENSOR 2 (DOWNSTREAM OF CATALYTIC CONVERTER) HOT IN RUN, START IC 1 CTRL IC 2 CTRL IC 3 CTRL IC 4 CTRL IC 5 CTRL IC 6 CTRL INJECTORS LOW REF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (UPPER LEFT SIDE OF ENGINE) MAP SENS SIG NCA WIRE OIL PRES SW SIG ORG/BLK WIRE PC SOL HIGH CTRL PC SOL LOW CTRL PNK PNK 2 3 WIRE PNK PNK PNK PNK PNK PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (UPPER LEFT SIDE OF ENGINE) PPL PPL 21 22 23 PPL/WHT WIRE PRIM FUEL PMP REL RED/BLK WIRE RED/WHT WIRE REQ TORQUE SIG STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PWM SOL TCC SOL VLV CTRL TRNS RG SW SIG A UNDER- HOOD FUSE BLOCK PCM I FUSE 28 VSS HIGH SIG VSS LOW SIGNAL WHT WIRE YEL WIRE YEL/BLK WIRE

1-2 SHIFT 2-3 SHIFT 3-2 SHIFT AUTOMATIC AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BRN WIRE CONTROL SOLENOID CTRL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRY WIRE IGN IGNITION COILS LO SW LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE NCA WIRE ORG/ WIRE PNK 4 5 WIRE PNK PNK PNK PNK PNK PNK PNK WIRE PNK WIRE PPL PPL 21 22 23 PRESSURE RED WIRE RED/BLK WIRE RED/WHT WIRE REV SW SENSOR SOLENOID SPARK PLUG SW SW TAN WIRE TAN/BLK WIRE TCC PMW TCC SOLENOID TEMPERATURE FLUID TRANSMISSION UNDER- HOOD FUSE BLOCK UNDER- HOOD JUNCTION BLOCK VALVE WHT WIRE YEL WIRE YEL/BLK WIRE