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

Control Module Power, Grounding, DLC, and Select Switch


Object Number: 556668  Size: FS
Transfer Case Control Components
Transfer Case Description
Control Module and Shift Motor/Encoder - Gasoline Engines
IGN A Fuse and Ignition Switch
GAUGES Fuse
ILLUM Fuse
LIGHTING and BATTERY Fuses
SECURITY/STRG, PK LPS, and DRL-FOG Fuses
Cell 14: G200 (4 of 4)
G200 (2 of 4)
G200 (1 of 4)
Handling ESD Sensitive Parts Notice
Figure 2:

Control Module and Shift Motor/Encoder -- Gasoline Engines


Object Number: 556675  Size: FS
Transfer Case Control Components
Transfer Case Description
Control Module and Shift Motor/Encoder - Diesel Engines
Control Module Power, Grounding, DLC, and Select Switch
Handling ESD Sensitive Parts Notice
IGN A Fuse and Ignition Switch
AIR BAG, TURN B/U, CRANK, and TRANS Fuses
VSS and Cruise Controls
VSS Circuit and Cruise Control
G105 (2 of 2)
G105 (1 of 2)
Automatic Transmission Shift Lock Control Circuit
Automatic Transmission Shift Lock Control Circuit
Figure 3:

Control Module and Shift Motor/Encoder -- Diesel Engines


Object Number: 582245  Size: FS
Transfer Case Control Components
Transfer Case System Description
Front Axle Actuator Circuits
Control Module and Shift Motor/Encoder - Gasoline Engines
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Automatic Transmission Shift Lock Control Circuit
Automatic Transmission Shift Lock Control Circuit
G105 (1 of 2)
IGN A Fuse and Ignition Switch
AIR BAG, TURN B/U, CRANK, and TRANS Fuses
VSS Circuits
Figure 4:

Front Axle Actuator Circuits


Object Number: 556677  Size: FS
Transfer Case Control Components
Transfer Case Description
Control Module and Shift Motor/Encoder - Diesel Engines
G105 (1 of 2)
G105 (2 of 2)
G105 (1 of 2)
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
CRUISE and 4WD Fuses
IGN B Fuse and Ignition Switch