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

Figure 1: Electric Shift Transfer Case Locator View


Object Number: 203300  Size: LF
(1)Connector C116 (Engine Harness to VSS Extension Harness)
(2)Electric Shift Transfer Case
(3)Vehicle Speed Sensor (W/ Electric Shift 4WD)
(4)Electric Shift Transfer Case extension harness connector
Figure 2:

Figure 2: Transfer Case In-Line Connector Locator View


Object Number: 203302  Size: LF
(1)Brake Booster
(2)Connector C108 (Body Harness to Transfer Case Extension Harness)
Figure 3:

Figure 3: Front Axle Switch Locator View


Object Number: 203303  Size: LF
(1)Front Axle Switch (W/ Electric Shift 4WD)
(2)Front axle
Figure 4:

Figure 4: Instrument Panel Center Switch Locator View


Object Number: 208249  Size: LF
(1)Instrument Panel (IP)
(2)Transfer Case Select Switch (W/ Electric Shift 4WD)
(3)Supplemental Restraint IP Module Switch
(4)Transfer Case Select Switch Connector C2
(5)Transfer Case Select Switch Connector C1
Figure 5:

Figure 5: Shift Control Module Locator View


Object Number: 209106  Size: LF
(1)Side cowl panel
(2)Body harness to Connector C203
(3)Grounds G203, G204, and G205
(4)Transfer Case Control Module (S4WD)
Figure 6:

Figure 6: LH Front Fender Area Locator View


Object Number: 209583  Size: LF
(1)Electronic Brake Control Module Connector C1
(2)Electronic Brake Control Module Connector C2
(3)Connector C109 (Body Harness to 4WAL Harness)
(4)Ground G110
(5)Windshield Washer Pump
(6)Underhood Bussed Electrical Center (UBEC)
(7)Connector C114 (Body Harness to Front Axle Switch, W/ Electric Shift 4WD)
(8)Brake Pressure Warning Switch
(9)Connector C108 (Body Harness to S4WD Extension Harness)