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

Power and Ground


Object Number: 541072  Size: FS
Transfer Case Control Components
Transfer Case Control Module Description
Electric Shift Transfer Case
Power and Grounding Connector End Views
B+ Bus Bar
INT BATT Fuse
CTSY LP Fuse and Courtesy Lamp Relay
CTSY LP Fuse and Courtesy Lamp Relay
Handling ESD Sensitive Parts Notice
G205 and G206 (Utility)
Figure 2:

Electric Shift Transfer Case


Object Number: 541075  Size: FS
Transfer Case Control Components
Transfer Case Control Module Description
Transfer Case Shift Control Switch
Power and Ground
Handling ESD Sensitive Parts Notice
Figure 3:

Transfer Case Shift Control Switch


Object Number: 541076  Size: FS
Transfer Case Control Components
Transfer Case Control Module Description
Four Wheel Drive Indicator Switch and Vehicle Control Module (VCM)
Electric Shift Transfer Case
ILLUM and PARK LP Fuses
Body Control System Connector End Views
ILLUM Fuse 12
Handling ESD Sensitive Parts Notice
SIR Schematic
BCM (Chevy/GMC)
Ign ACC, RUN and RAP Bus Bar
Handling ESD Sensitive Parts Notice
G203 and G204 (Pickup)
G203 and G204 (Pickup)
Handling ESD Sensitive Parts Notice
Four Wheel Drive Indicator Switch and Vehicle Control Module (VCM)
Figure 4:

Four Wheel Drive Indicator Switch and Vehicle Control Module (VCM)


Object Number: 541078  Size: FS
Transfer Case Control Components
Transfer Case Control Module Description
Transfer Case Shift Control Switch
CRANK and CLSTR Fuses
Power and Grounding Connector End Views
Transfer Case Shift Control Switch
CRANK and CLSTR Fuses
BTSI Fuse Power (Automatic Transmission)
BTSI Fuse Power (Automatic Transmission)
Cruise Control Module and PCM/VCM
VCM Connector End Views
Vehicle Speed Signal, Transfer Case Shift Control Module and 4WD IndicAtor Switch
Handling ESD Sensitive Parts Notice
Class 2 Communication (310 ABS)
Power and Ground (325 ABS)
Handling ESD Sensitive Parts Notice