GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Power, Ground, and Serial Data


Object Number: 2082729  Size: FS
Figure 2:

Transfer Case Encoder Motor


Object Number: 2082731  Size: FS
Figure 3:

Front Axle Actuator


Object Number: 2082734  Size: FS
Figure 4:

Shift Control Switch Inputs


Object Number: 2082736  Size: FS