GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 GMC Sierra Denali 🢒 Driveline/Axle 🢒 Front Drive Axle 🢒 Transfer Case Control Schematics
Figure 1:

Power, Ground, Serial Data and Transfer Case Encoder Motor
Object Number: 1570430 Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Control Module References
Propshaft Speed Sensors, Front Axle Actuator and Transfer Case Shift Control Switch
B+ Bar Bus
Power, Ground, DLC and Splice Pack SP 205
G104, G106, G107 and G110
Figure 2:

Propshaft Speed Sensors, Front Axle Actuator and Transfer Case Shift Control Switch
Object Number: 1570431 Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Control Module References
Power, Ground, Serial Data and Transfer Case Encoder Motor
LED Dimming Supply - 2 of 2
Ignition Switch - START, RUN, and ACC/RUN/START Bus Bars and IGN A and CRANK Fuses
Transfer Case Control Schematic Icons
Transfer Case Control Schematic Icons
G203 - 1 of 2
G104, G106, G107 and G110