GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2004
🢒
TopKick C-Series (Crew) C4/C5
🢒
Brakes
🢒
Air Antilock Brake System
🢒 Air Antilock Brake System Schematics
Figure
1:
EBCM, Air Brake Relay, Telltale Module ABS
Master Electrical Component List
Air ABS Description and Operation
Stoplamp Switch
Ignition Switch - OFF/RUN/START, RUN/START and START Bus Bars
Ignition Switch - RUN and ACC/RUN Bus Bars
ABS 1, ABS 2, ABS 3, E/A PUMP, and HORN Fuses/Circuit Breakers
GAUGES, L-RR TRUCK, R-RR TRUCK, and SIR Fuses/Circuit Breakers
AXLE/4WD, BRAKE, CHASSIS, and HTR/AC Fuses/Circuit Breakers
AXLE/4WD, BRAKE, CHASSIS, and HTR/AC Fuses/Circuit Breakers
Driver Information Center (DIC)
G101 - 2 of 2
G100 (LG4)
J1939 Serial Data (L65/L18/LG4/LC8) - 2 of 2
Data Link Connector, Power and Ground - 1 of 2
G200, G202, and G203 - 1 of 4
Figure
2:
Brake Switch, Air Dryer Heater Switch
Master Electrical Component List
Air ABS Description and Operation
Wheel Speed Sensors and Brake Pressure Modulator Valves
EBC, Air Brake Relay, Telltale Module ABS
Ignition Switch - RUN and ACC/RUN Bus Bars
AXLE/4WD, BRAKE, CHASSIS, and HTR/AC Fuses/Circuit Breakers
Figure
3:
Wheel Speed Sensors, EBCM, TCS Module
Master Electrical Component List
Air ABS Description and Operation
Brake Pressure Modulator Valves
Stoplamp Switch
Figure
4:
TCS Valve, EBC, TCS Modulator
Master Electrical Component List
Air ABS Description and Operation
Wheel Speed Sensors and Brake Pressure Modulator Valves
Engine Exhaust System