GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC Suburban - 2WD 🢒 Brakes 🢒 Antilock Brake System 🢒 Transfer Case Control Component Views

Transfer Case Control Component Views Selectable 4WD

Figure 1:

Selectable Four-Wheel Drive Indicator Wiring
Object Number: 183901 Size: MF
(1)Convenience Center
(2)Selectable Four-Wheel Drive Indicator Lamp
(3)Transfer Case Shift Illumination Lamp
Figure 2:

Transfer Case Switch (MT1) and Synchronizer
Object Number: 183905 Size: MF
(1)Engine Harness
(2)Heated Oxygen Sensor Connectors
(3)Vehicle Speed Sensor
(4)Transfer Case Synchronizer
(5)Transfer Case Switch
(6)Transmission Connector
(7)Park/Neutral Position Switch
(8)Transmission Input Speed Sensor
Figure 3:

Transfer Case Switch (MW3) and C120
Object Number: 183908 Size: MF
(1)Connector C120
(2)Heated Oxygen Sensor
(3)Vehicle Speed Sensor
(4)Transfer Case Synchronizer
(5)Transfer Case Switch (½ ton and ¾ ton)
(6)Transfer Case
(7)Transfer Case Switch (1 ton)
(8)Engine Harness
(9)Heated Oxygen Sensor Connector
Figure 4:

Transfer Case Switch (MG5)
Object Number: 183922 Size: LF
(1)Heated Oxygen Sensor Connectors
(2)Vehicle Speed Sensor
(3)Transfer Case Switch
(4)Transfer Case
(5)Back-Up Lamp Switch
(6)Heated Oxygen Sensor Connector
Figure 5:

Transfer Case Switch (M30)
Object Number: 183946 Size: LF
(1)Heated Oxygen Sensor Connectors
(2)Vehicle Speed Sensor
(3)Transfer Case Switch
(4)Transfer Case
Figure 6:

Transfer Case Select Switch
Object Number: 183948 Size: LF
(1)Radio Connector
(2)Rear Wiper Switch
(3)Cargo Lamp Switch
(4)Rear Fan Switch
(5)Electric Shift Transfer Case Switch or Fog Lamp Switch
Figure 7:

Transfer Case Relay
Object Number: 183902 Size: MF
(1)Transfer Case Relay
(2)Front Axle Actuator
(3)Front Axle Switch
Figure 8:

6.5L Diesel Engine, RH Side
Object Number: 172401 Size: LF
(1)Engine Harness
(2)Generator Connector
(3)Turbo
(4)Grounds G150 And G105
(5)Ground G104
Figure 9:

C224 and C225
Object Number: 183911 Size: MF
(1)Cruise Control Module
(2)Pass Through Grommet P100
(3)Connector C100
(4)Connector C110
(5)Connector C104
(6)Connector C111
(7)Rear Lamp Harness
(8)Engine Harness
(9)Windshield Wiper Motor
(10)Connector C225
(11)Connector C224
Figure 10:

P100
Object Number: 183913 Size: MF
(1)Connector C102
(2)LH Front Headlamp Connectors (Composite)
(3)Park And Turn Lamp LH Front
(4)LH Fog Lamp Connector
(5)Horn
(6)Connector C101
(7)Ground G113
(8)Connector C100
(9)Pass Through Grommet P100

Transfer Case Control Component Views Automatic 4WD

Figure 1:

Automatic 4WD Support Wiring
Object Number: 429318 Size: MF
(1)Automatic Transfer Case Control Module
(2)IP Harness
(3)Daytime Running Lights Control (DRL) Module
(4)Convenience Center
(5)IP Reinforcement Brace
Figure 2:

4WD Support Wiring
Object Number: 429328 Size: MF
(1)Engine Harness
(2)Inline Connector: C120
(3)Right Bank Heated Oxygen Sensor Connector
(4)Vehicle Speed Sensor
(5)Transfer Case Syncronizer
(6)Transfer Case Switch (1/2 Ton, 3/4 Ton)
(7)Transfer Case
(8)Transfer Case Switch
(9)Left Bank Heated Oxygen Sensor Connector