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

Power, Ground and Transfer Case Encoder Motor


Object Number: 1241279  Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Propshaft Speed Sensors and Front Axle Actuator
HVAC/ECAS, RR HVAC, BLOWER, RR DEFOG, STOP LP, TREC Fuses
G110
Figure 2:

Propshaft Speed Sensors and Front Axle Actuator


Object Number: 1241282  Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Switch Controls
Power, Ground and Transfer Case Encoder Motor
BRAKE, HTR/AC, HVAC I, CRUISE, 4WD Fuses
Switch Controls
G110
Figure 3:

Switch Controls and Class 2 Serial Data


Object Number: 1241284  Size: FS
Master Electrical Component List
Transfer Case Description and Operation
Propshaft Speed Sensors and Front Axle Actuator
LED Dimming Supply Voltage - 2 of 2
Power, Ground and Transfer Case Encoder Motor
G203 - 1 of 3
G203 - 1 of 3
G203 - 1 of 3
SP205 - 1 of 2