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

Cell 38: Power, Ground, Motor Controls and Data Link


Object Number: 178017  Size: FS
Transfer Case Control Component Views
Transfer Case Circuit Description
Cell 38: Transfer Case Vehicle Speed Sensors
Figure 2:

Cell 38: Transfer Case Vehicle Speed Sensors


Object Number: 178021  Size: FS
Transfer Case Control Component Views
Transfer Case Circuit Description
Cell 38: Power, Ground, Motor Controls and Data Link