Transfer Case Control Connector End Views

Rear Differential Lock Actuator Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326801 2-Way F GT 150 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	BLK	1725	Rear Differential Lock - Low - Reference
B	LT GRN	2659	Rear Differential Lock - High - Control

Transfer Case Encoder Motor Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326906 8-Way F GT 280 SLD (BLK)
Pin	Wire Color	Circuit No.	Function
A	BLK/WHT	1554	Encoder Low Reference
B	BRN/WHT	1555	Channel P Encoder - Signal
C	RED/WHT	1556	Channel C Encoder - Signal
D	BLK	1552	Motor Control B
E	RED	1553	Motor Control A
F	-	-	Not Used
G	YEL/BLK	1558	Channel B Encoder - Signal
H	DK BLU/WHT	1557	Channel A Encoder - Signal

Transfer Case Shift Control Module Connector End View - C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12084944 16-Way F Micro-Pack 100 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A1	DK GRN/WHT	1133	ATC Class 2 Serial Data
A2	LT GRN	2659	Rear Differential Lock - High - Control
A3	PNK	1561	Rear Differential Lock Indicator Control
A4	PPL/WHT	1565	4 'LO' Indicator - Control
A5	TAN/BLK	1566	4 'HI' Indicator - Control
A6	LT BLU	1693	Switch Signal
A7	RED/WHT	1556	Channel C Encoder - Signal
A8	-	-	Not Used
B1	-	-	Not Used
B2	YEL/BLK	1558	Channel B Encoder - Signal
B3	LT GRN/BLK	1563	4 'HI' Indicator - Control
B4	BRN	1560	Neutral Indicator Control
B5	GRY/BLK	1694	4WD Low Signal
B6	BRN/WHT	1555	Channel P Encoder - Signal
B7	-	-	Not Used
B8	BLK	1725	Rear Diffeential Lock - Low - Reference

Transfer Case Shift Control Module Connector End View - C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110259 16-Way F Micro-Pack 100 Series (GRN)
Pin	Wire Color	Circuit No.	Function
A1-A7	-	-	Not Used
A8	BLK/WHT	1554	Encoder Low Reference
B1-B5	-	-	Not Used
B6	DK BLU/WHT	1557	Channel A Encoder - Signal
B7	-	-	Not Used
B8	GRY	596	5-Volt Reference

Transfer Case Shift Control Module Connector End View - C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12052856 4-Way F Metri-Pack 280 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	BLK	1550	Ground
B	ORN	1640	Battery Positive Voltage
C	RED	1553	Motor Control A
D	BLK	1552	Motor Control B

Transfer Case Shift Control Switch Connector End View - C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12064862 8-Way F Metri-Pack 150 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	BLK	1050	Ground
B	PNK	1561	Differential Lock Indicator Control
C	BRN	1560	Neutral Indicator Control
D	-	-	Not Used
E	PPL/WHT	1382	4LO LED Dimming Signal
F	BRN/WHT	230	Instrument Panel Lamps Dimming Control
G	BRN	241	Ignition 3 Voltage
H	LT BLU	1693	Switch Signal

Transfer Case Shift Control Switch Connector End View - C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12045813 4-Way F Metri-Pack 150 Series (NAT)
Pin	Wire Color	Circuit No.	Function
A	GRY	596	5-Volt Reference
B	LT GRN/BLK	1563	4 'HI' Indicator - Control
C	PPL/WHT	1565	4 'LO' Indicator - Control
D	TAN/BLK	1566	4 'HI' Indicator - Control