GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 Sonoma Pickup - 2WD 🢒 Body and Accessories 🢒 Body Control System 🢒 Transfer Case Control Component Views
Figure 1:

Transfer Case Control Module Locator View
Object Number: 203290 Size: LF
(1)Right side cowl panel
(2)Transfer Case Control Module Connector (Not Used on Selectable)
(3)Transfer Case Control Module Connector
(4)Body harness to IP Connector
Figure 2:

A4WD Transfer Case Locator View
Object Number: 498835 Size: LF
(1)C311 (Engine Harness to VSS Extension Harness)
(2)Transfer Case Encoder Motor Connector
(3)Transfer Case Rear Vehicle Speed Sensor
(4)Vehicle Speed Sensor (VSS) (Input to VCM)
(5)Transfer Case Front Vehicle Speed Sensor
Figure 3:

AutomaticTransfer Case In-Line Connector Locator View
Object Number: 203302 Size: LF
(1)Brake Booster
(2)C108 (Body Harness to Transfer Case Extension Harness)