GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 Transmission 🢒 Transfer Case - NVG 273 🢒 Transfer Case Control Schematics
Figure 1:

Power, Ground, Class 2 Serial Data, Transfer Case Shift Control Module and Transfer Case Encoder Motor
Object Number: 2076330 Size: FS
Figure 2:

Transfer Case Shift Control Switch Inputs
Object Number: 2076332 Size: FS