GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Brakes 🢒 Antilock Brake System 🢒 Antilock Brake System Schematics
Figure 1:

Module Power, Ground, and Wheel Speed Sensors
Object Number: 1839919 Size: FS
Master Electrical Component List
ABS Description and Operation
Control Module References
Serial Data, Traction Control and Stop Lamp Switches
Antilock Brake System Schematic Icons
ABS-1, ABS-2, ABS-3, E/A PUMP and HORN Fuses/Circuit Breakers
ABS-1, ABS-2, ABS-3, E/A PUMP and HORN Fuses/Circuit Breakers
Hydraulic Brakes
STRTR Fuse/Circuit Breaker
Ignition Switch - OFF/RUN/START, RUN/START, and START Busses
ENGINE and PCM-1 Fuses/Circuit Breakers
G103 - 2 of 2
G103 - 2 of 2
Hydraulic Brakes
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Figure 2:

Serial Data, Traction Control and Stop Lamp Switches
Object Number: 1839921 Size: FS
Master Electrical Component List
ABS Description and Operation
Control Module References
Module Power, Ground, and Wheel Speed Sensors
Ignition Switch - OFF/RUN/START, RUN/START, and START Busses
AIRBAG, GAUGES, LT REAR TURN/STOP, and RT REAR TURN/STOP Fuses/Circuit Breakers
Splice Pack SP203
Ignition Switch - RUN and ACC/RUN Busses
AXL/4WD, BRK, HYD/AIR BRK, and HTR/AC Fuses/Circuit Breakers
Exhaust System Schematics
G101 - 2 of 2
AXL/4WD, BRK, HYD/AIR BRK, and HTR/AC Fuses/Circuit Breakers
Low Reference 2 of 2
Ground