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

Instrument Carrier Support, Lower Left


Object Number: 753262  Size: MF
(1)Transfer Case Shift Control Module
(2)Instrument Carrier Support, Left Side
Figure 2:

Transfer Case


Object Number: 753283  Size: MF
(1)Transfer Case Encoder Motor Connector
(2)Propshaft Speed Sensor - Rear
(3)Vehicle Speed Sensor (VSS)
(4)Propshaft Speed Sensor - Front
(5)C310