Chevrolet TrailBlazer I facelift (2005-2009) backup fuse 27 Wiring diagrams

1 2 52 50 BUS (+) BUS (-) TR SW P TR SW B 23 46 TR SW C TR SW B TR SW P TR SW A BUS (-) BUS (+) 4.2L 5.3L, 6.0L 4.2L 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) COMPUTER DATA LINES SYSTEM 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 (ON LOWER LEFT SIDE OF TRANSMISSION) PNK WIRE PARK/NEUTRAL POSITION SWITCH (ON LOWER LEFT SIDE OF TRANSMISSION) PNK WIRE REAR FUSE BLOCK (BELOW LEFT REAR SEAT) REAR FUSE TBC 5 FUSE 32 BLOCK (BELOW LEFT REAR SEAT) RIGHT TAILLAMP BACKUP LAMP CIRCUIT BOARD SER DATA SERIAL DATA TAN WIRE TAN/WHT WIRE TR SW A TR SW C TRAILER CONNECTOR TRANSMISSION CONTROL MODULE TRLR B/U FUSE 4 UNDER- HOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE

1-2 SHIFT SOLENOID (1-2 SS) VALVE 4.2L 4.2L 5.3L, 6.0L AIR SOL FUSE 54 AIR SOL RELAY 55 AUTOMATIC TRANSMISSION BACKUP FUSE 27 BODY CONTROL MODULE (BCM) EAP RELAY 49 ECM 1 FUSE 28 ECM FUSE 29 ENGINE CONTROL MODULE (ECM) ENGINE CONTROL MODULE (PCM) PARK/ NEUTRAL POSITION (PNP) SWITCH F/PMP RELAY 41 FAN FUSE 20 FAN RELAY 45 FROM AIR SOL FUSE 54 FROM HAZRD FUSE 52 (DIAGRAM 2 OF 6) FROM IGNITION SWITCH (DIAGRAM 1 OF 6) FUEL INJECTOR 1 FUEL INJECTOR 2 POWERTRAIN CONTROL MODULE (PCM) FUEL INJECTOR 3 FUEL INJECTOR 4 FUEL INJECTOR 5 FUEL INJECTOR 6 HDM FUSE 53 FUSE 57 HEADLAMP DRIVER MODULE (HDM) RELAY 46 HI HEADLAMP RELAY 43 IGN COILS FUSE 14 IGNITION COIL 1 IGNITION COIL 2 IGNITION COIL 3 IGNITION COIL 5 IGNITION COIL 4 INPUT SPEED SENSOR (ISS) TORQUE CONVERTER CLUTCH (TCC) SOLENOID VALVE MODULATION (TCC PWM) SOLENOID ORG/ WIRE PCM B FUSE 10 PCM I FUSE 28 PNK PNK (IN FUEL INJECTOR HARNESS) WIRE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) RED WIRE SECONDARY AIR INJECTION PUMP RELAY IGNITION COIL 6 TBC 1 FUSE 31 FUSE 58 TO AIRBAG FUSE 18 (DIAGRAM 3 OF 6) TO IGN E FUSE 22 (DIAGRAM 4 OF 6) TO POWERTRAIN RELAY 60 (DIAGRAM 6 OF 6) TORQUE CONVERTER CLUTCH PULSE WIDTH TRANS FUSE 53 UNDER- HOOD FUSE BLOCK (ABOVE LEFT FRONT WHEELWELL) VALVE YEL WIRE

4.2L 5.3L, 6.0L A/T SHIFT LOCK A/T SHIFT LOCK CONTROL SOLENOID PARK LOCK SOLENOID AUTOMATIC TRANSMISSION SHIFT LOCK ACTUATOR (CENTER OF FLOOR PAN) BACKUP FUSE 27 BLK WIRE BTSI FUSE 25 DK GRN WIRE HOT IN RUN OR START LT GRN WIRE PARK/ NEUTRAL POSITION (PNP) SWITCH (ON LOWER LEFT SIDE OF TRANSMISSION) PNK WIRE STOP LAMP SWITCH (ON BRAKE PEDAL ASSEMBLY) UNDERHOOD FUSE BLOCK (ON LEFT SIDE OF ENGINE COMPT) WHT WIRE