GM Service Manual Online
For 1990-2009 cars only

Transfer Case Control Schematics Automatic 4WD

Figure 1:

Shift Control Module Power, Ground, DLC and Service 4WD Indicator


Object Number: 556705  Size: FS
Transfer Case Control Components
Transfer Case Circuit Description
Active Transfer Case Select Switch Controls
Cell 10: Ignition Switch and WIPER Fuse
Cell 10: Ignition Switch and WIPER Fuse
Cell 10: Ignition Switch and WIPER Fuse
Cell 10: Ignition Switch and WIPER Fuse
Indicator Lamps
Cell 14: G103 and G104
Cell 11: G104 Diesel
Cell 14: G200 (1 of 4)
Cell 50
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 2:

Active Transfer Case Select Switch Controls


Object Number: 556688  Size: FS
Transfer Case Control Components
Transfer Case Circuit Description
Transfer Case Select Switch Circuits
Shift Control Module Power, Ground, DLC and Service 4WD Indicator
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Cell 10: Ignition Switch and WIPER Fuse
Cell 10: Ignition Switch and WIPER Fuse
Cell 10: IGN A and RADIO BATT Fuses, PWR ACCY Circuit Breaker (w/ ZM9)
Brake Transaxle/Transmission Shift Interlock (BTSI)
Figure 3:

Transfer Case Select Switch Circuits


Object Number: 556694  Size: FS
Transfer Case Control Components
Transfer Case Circuit Description
Front Axle Actuator Circuits
Active Transfer Case Select Switch Controls
Handling ESD Sensitive Parts Notice
Cell 117: PK LPS Fuse 9, ILLUM Fuse 14, Headlamp and Panel Dimmer Switch (1 of 2)
Cell 10: Ignition Switch and WIPER Fuse
Cell 10: Ignition Switch and WIPER Fuse
Cell 117: PK LPS Fuse 9, ILLUM Fuse 14, Headlamp and Panel Dimmer Switch(2 of 2)
Cell 117: PK LPS Fuse 9, ILLUM Fuse 14, Headlamp and Panel Dimmer Switch (1 of 2)
Cell 14: G200 (2 of 4)
Figure 4:

Front Axle Actuator Circuits


Object Number: 556709  Size: FS
Transfer Case Control Components
Transfer Case Circuit Description
Transfer Case Select Switch Circuits
Handling ESD Sensitive Parts Notice
Cell 10: Ignition Switch and WIPER Fuse
Cell 10: Ignition Switch and WIPER Fuse
Cell 14: G105 (1 of 2)
Cell 14: G105 (2 of 2)