GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2003
🢒
TrailBlazer - 2WD
🢒
Body and Accessories
🢒
Wiring Systems
🢒 Body Control System Schematics
Figure
1:
Power and Ground
Master Electrical Component List
Body Control System Description and Operation
Controlled/Monitored Subsystem References 1of 3
Audible Warnings
Horns
Headlamp Washer
Steering Wheel Controls
Steering Wheel Controls
Headlamp Washer
Late Production
Brake Warning Systems Schematics
G302 2 of 2
G302 - 1 of 2, G303 and G304
B+ Bus - Underhood Fuse Block
ACCY/RUN and RUN/START Bus Bars
COILS, CANISTER, ECAS, IPC/DIC, FLASH, TBC1, and PCM B Fuses
B+ Bus - Rear Fuse Block
SUNROOF, AUX PWR2, RR HVAC, AUX PWR1, TBC2, TBC3, TBC4 Fuses
IGN 0, TBC IF, TBC ACC, FRT WPR, and RAIN Fuses
HVAC I, BRAKE, and TBC RUN Fuses
Figure
2:
Controlled/Monitored Subsystem References (1 of 3)
Master Electrical Component List
Body Control System Description and Operation
Controlled/Monitored Subsystem References 2 of 3
Power and Grounds
Right
Left
Door Locks/Indicators, Rear
Rear Wiper/Washer
Figure
3:
Controlled/Monitored Subsystem References (2 of 3)
Master Electrical Component List
Body Control System Description and Operation
Controlled/Monitored Subsystem References 3 of 3
Controlled/Monitored Subsystem References 1of 3
Headlamp Switch
Foglamps
Interior Lamps (Short Wheelbase, Body Type VIN 3)
Backup Lamps
Park Lamp Control, Turn Signal Inputs and Hazard Switch
Headlamps
Foglamps
Courtesy Lamp Supply
I/P Dimming Supply - 1of 2
Figure
4:
Controlled/Monitored Subsystem References (3 of 3)
Master Electrical Component List
Body Control System Description and Operation
Controlled/Monitored Subsystem References 2 of 3
Theft Deterrent , Without Immobilizer
Data Link Connector and SP205
Liftgate and Rear Door Switches
Outside Moisture Senor and Front Wiper/Washer Motor
Ambient Light/Sunload Sensor
Ambient Light/Sunload Sensor
Headlamps
Interior Lamps (Short Wheelbase, Body Type VIN 3)
Courtesy Lamp Supply