GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Transfer Case Control Schematics
Figure 1:

Power, Ground, Serial Data, and Transfer Case Encoder Motor
Object Number: 1775034 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+ Bus Bar
Power, Ground, DLC and Splice Pack SP205
G104, G107, and G110
Figure 2:

Prop Shaft Speed Sensors, Front Axle Actuator, and Transfer Case Shift Control Switch
Object Number: 1775038 Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Control Module References
Power, Ground, Serial Data, and Transfer Case Encoder Motor
Ignition Switch - START, RUN, and ACC/RUN/START BUS BARS, IGN A, and CRNK Fuses
LED Dimming Supply - 2 of 2
G203 - 1 of 2
G104, G107, and G110
Transfer Case Control Schematic Icons
Transfer Case Control Schematic Icons