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

Transfer Case Control Module Locator View


Object Number: 371196  Size: LF
(1)Left side cowl panel
(2)Transfer Case Shift Control Module Connector C2
(3)Transfer Case Shift Control Module Connector C1
(4)Transfer Case Shift Control Module
Figure 2:

Transfer Case


Object Number: 406113  Size: LF
(1)Transfer Case Encoder Motor Connector
(2)Transfer Case Speed Sensor, Rear
(3)Vehicle Speed Sensor
(4)Transfer Case Speed Sensor, Front