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

Power, Transfer Case Shift Control Module, and Encoder Motor


Object Number: 540966  Size: FS
Transfer Case Control Components
Transfer Case Circuit Description
Transfer Case Shift Control Switch and Shift Control Module
G103 and G105
Ign RUN and START Bus Bar
Power and Grounding Connector End Views
B+ Bus Bar
G103 and G105
G103 and G105
G103 and G105
Power, Ground, MIL and VCM
Transfer Case Control Connector End Views
Transfer Case Shift Control Switch and Shift Control Module
Transfer Case Shift Control Switch and Shift Control Module
Front Drive Axle Clutch Solenoid, 4WD Indicator Switch and Speed Sensors
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 2:

Transfer Case Shift Control Switch and Shift Control Module


Object Number: 540970  Size: FS
Transfer Case Control Components
Transfer Case Circuit Description
Front Drive Axle Clutch Solenoid, 4WD Indicator Switch and Speed Sensors
Power, Transfer Case Shift Control Module, and Encoder Motor
CLSTR Fuse
Data Link Connector (DLC), VCM and Engine Oil Pressure Gauge Sensor
Handling ESD Sensitive Parts Notice
Power, Transfer Case Shift Control Module, and Encoder Motor
Hazard Switch, Radio, Instrument Cluster and Ground
Radio/Audio System Schematics
Handling ESD Sensitive Parts Notice
VCM Connector End Views
Power, Transfer Case Shift Control Module, and Encoder Motor
SP203
Handling ESD Sensitive Parts Notice
G200 and G201
Figure 3:

Front Drive Axle Clutch Solenoid, 4WD Indicator Switch and Speed Sensors


Object Number: 540974  Size: FS
Transfer Case Control Components
Transfer Case Circuit Description
Transfer Case Shift Control Switch and Shift Control Module
Power, Transfer Case Shift Control Module, and Encoder Motor
Power, Transfer Case Shift Control Module, and Encoder Motor
Power and Grounding Connector End Views
Transfer Case Control Connector End Views
Handling ESD Sensitive Parts Notice
G104, G106, G107, G108 and G118
G104, G106, G107, G108 and G118