Transfer Case Control Connectors

Front Axle Indicator Switch

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12103584 2-Way F Weather Pack Connector (BRN)
Pin	Wire Color	Circuit No.	Function
A	BRN	241	Ignition 3 Voltage
B	BLK/WHT	1695	Axle Switch Signal

Transfer Case Shift Control Module

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12041476 32-Way F Micro-Pack 100 Series (BLU)
Pin	Wire Color	Circuit No.	Function
C1	GRY/BLK	1694	4WD Low Signal
C2	-	-	Not Used
C3	DK GRN/ WHT	1559	4 LO Switch Signal
C4	DK GRN/ WHT	1562	2 HI Switch Signal
C5	GRY/BLK	1564	4 HI Switch Signal
C6	ORN	40	Battery Positive Voltage
C7	-	-	Not Used
C8	BRN	241	Ignition 3 Voltage
C9	BLK/WHT	1554	Encoder Signal Ground
C10	BLK	1050	Ground
C11	LT GRN/BLK	1563	2 HI Indicator Control
C12	TAN/BLK	1566	4 HI Indicator Control
C13	-	-	Not Used
C14	PPL/WHT	1565	4 LO Indicator Control
C15	-	-	Not Used
C16	BLK	1552	Motor A Control
D1	RED	1553	Motor B Control
D2	LT GRN/BLK	584	A/T Shift Lock Control Switch Supply Voltage
D3	ORN	1568	Diagnostic Enable
D4	BRN/WHT	1555	Channel P Encoder Signal
D5	RED/WHT	1556	Channel C Encoder Signal
D6	DK BLU/ WHT	1557	Channel A Encoder Signal
D7	YEL/BLK	1558	Channel B Encoder Signal
D8	DK GRN/ WHT	817	Vehicle Speed Signal
D9-D11	-	-	Not Used
D12	BLK	1050	Ground
D13	BLK	1050	Ground
D14	ORN	1640	Battery Positive Voltage
D15	ORN	1640	Battery Positive Voltage
D16	PPL	806	Crank Voltage

Transfer Case Shift Control Switch C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12064766 8-Way F Metri-Pack 150 Series (BLU)
Pin	Wire Color	Circuit No.	Function
A	GRY/BLK	1564	4 HI Switch Signal
B	DK GRN/ WHT	1562	2 HI Switch Signal
C	PPL/WHT	1565	4 LO Indicator Control
D	TAN/BLK	1566	4 HI Indicator Control
E	LT GRN/BLK	1563	2 HI Indicator Control
F	DK GRN/ WHT	1559	4 LO Switch Signal
G	BLK	1050	Ground
H	GRY	1220	Instrument Panel Lamp Fuse Supply Voltage - 2

Transfer Case Shift Control Switch C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12045013 4-Way F Metri-Pack 150 Series (NAT)
Pin	Wire Color	Circuit No.	Function
A	-	-	Not Used
B	PPL/WHT	1382	LED Dimming Signal
C	BRN	241	Ignition 3 Voltage
D	-	-	Not Used

Transfer Case Encoder Motor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12124051 8-Way F (BLK)
Pin	Wire Color	Circuit No.	Function
1	YEL/BLK	1558	Channel B Encoder Signal
2	DK BLU/ WHT	1557	Channel A Encoder Signal
3	BLK/WHT	1554	Encoder Signal Ground
4	BRN/WHT	1555	Channel P Encoder Signal
5	-	-	Not Used
6	RED	1553	Motor Control B
7	BLK	1552	Motor Control A
8	RED/WHT	1556	Channel C Encoder Signal