Transfer Case Control Connectors

Transfer Case Shift Control Module - 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-A3	-	-	Not Used
A4	PPL/WHT	1565	4 LO Indicator Control
A5	PNK	1561	AWD 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	-	-	Not Used
B4	BRN	1560	Neutral Indicator Control
B5	GRY/BLK	1694	4WD Low Signal
B6	BRN/WHT	1555	Channel P Encoder - Signal
B7-B8	-	-	Not Used

Transfer Case Shift Control Module - 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 Signal Ground
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 - C3

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12052856 4-Way F Micro-Pack 280 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	BLK	2150	Ground
B	ORN	1640	Battery Positive Voltage
C	RED	1553	Motor Control A
D	BLK	1552	Motor Control B

Transfer Case Shift Control Switch - 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	-	-	Not Used
C	BRN	1560	Neutral Indicator Control
D	-	-	Not Used
E	PPL/WHT	1382	LED Dimming Supply
F	BRN/WHT	230	Instrument Panel Lamps Dimming Control
G	BRN	241	Ignition 3 Voltage
H	GRY	596	5-Volt Reference

Transfer Case Shift Control Switch - C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12064860 6-Way F Metri-Pack 150 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A-B	-	-	Not Used
C	PNK	1561	AWD Indicator Control
D	PPL/WHT	1565	4 LO Indicator Control
E	-	-	Not Used
F	LT BLU	1693	Switch Signal

Transfer Case - Encoder Motor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326906 10-Way F GT280 Sealed (BLK)
Pin	Wire Color	Circuit No.	Function
A	BLK/WHT	1554	Encoder Signal Ground
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
G	PNK	39	Ignition 1 Voltage
H	LT BLU	1693	Switch Signal
F	-	-	Not Used
G	YEL/BLK	1558	Channel B Encoder - Signal
H	DK BLU/ WHT	1557	Channel A Encoder - Signal