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

Power, Ground, and DLC


Object Number: 1473151  Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Body Control Module (BCM) Programming/RPO Configuration
Transfer Case Encoder Motor
RUN/CRANK Relay Bus - 1 of 3, CRUISE, SIR, and TRANS Fuses
Splice Pack SP105 and G105 - 1 of 2
RUN/CRANK Relay Bus - 1 of 3, CRUISE, SIR, and TRANS Fuses
RUN/CRANK Relay Bus - 1 of 3, CRUISE, SIR, and TRANS Fuses
Shift Control Switch Inputs
Data Link Connector (DLC) Schematics
Splice Pack SP106 and G106 - 1 of 2
Figure 2:

Transfer Case Encoder Motor


Object Number: 1473152  Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Body Control Module (BCM) Programming/RPO Configuration
Front Axle Actuator
Power, Ground, and DLC
Transfer Case Control Schematic Icons
G100, G104, G102, G103, and G101
G100, G104, G102, G103, and G101
G100, G104, G102, G103, and G101
Figure 3:

Front Axle Actuator


Object Number: 1473153  Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Body Control Module (BCM) Programming/RPO Configuration
Shift Control Switch Inputs
Transfer Case Encoder Motor
B+ Bus - Underhood Fuse Block
Splice Pack SP105 and G105 - 1 of 2
G100, G104, G102, G103, and G101
G100, G104, G102, G103, and G101
G100, G104, G102, G103, and G101
Figure 4:

Shift Control Switch Inputs


Object Number: 1473154  Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Body Control Module (BCM) Programming/RPO Configuration
Front Axle Actuator
B+ Bus - Underhood Fuse Block
FR PK LP, RR PK, and RR PK LP Fuses
FR PK LP, RR PK, and RR PK LP Fuses
FR PK LP, RR PK, and RR PK LP Fuses
Interior Lights Dimming Schematics
Splice Pack SP106 and G106 - 1 of 2
Power, Ground, and DLC