GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Antilock Brake System Schematics
Figure 1:

Module Power, Ground, and Wheel Speed Sensors
Object Number: 1826453 Size: FS
Master Electrical Component List
ABS Description and Operation
Serial Data, Traction Control and Stop Lamp Switches
Batteries - LG4/LG5 and B+ Bus
ABS-1, ABS-2, ABS-3, E/A PUMP, and HORN Fuses/Circuit Breakers
Brake Warning Indicators
STRTR Fuse/Circuit Breaker
Ignition Switch - OFF/RUN/START, RUN/START, and START Bus Bars
ENGINE and PCM-1 Fuses/Circuit Breakers
Ignition Switch - OFF/RUN/START, RUN/START, and START Bus Bars
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
G203 - 1 of 4
G203 - 1 of 4
Brake Warning Indicators
Figure 2:

Serial Data, Traction Control and Stop Lamp Switches
Object Number: 1645598 Size: FS
Master Electrical Component List
ABS Description and Operation
Module Power, Ground, and Wheel Speed Sensors
Ignition Switch - OFF/RUN/START, RUN/START, and START Bus Bars
Ignition Switch - RUN and ACC/RUN Bus Bars and IGN 3 Fuse
AIRBAG, GAUGES, LT REAR TURN/STOP, and RT REAR TURN/STOP Fuses/Circuit Breakers
AXL/4WD, BRK, HTR/AC, and HYD/AIR BRK Fuses/Circuit Breakers
AXL/4WD, BRK, HTR/AC, and HYD/AIR BRK Fuses/Circuit Breakers
Splice Pack SP203
Engine Exhaust Brake Schematics
G101 - 2 of 2