Transfer Case Control Connector End Views

WARNING: This page is about a different car, the 2004 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

Rear Differential Lock Actuator Terminal Identification

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

Transfer Case Encoder Motor Terminal Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326906 8-Way F GT 280 SLD (BK)
Pin	Wire Color	Circuit No.	Function
A	BK/WH	1554	Encoder Low Reference
B	BN/WH	1555	Channel P Encoder - Signal
C	RD/WH	1556	Channel C Encoder - Signal
D	BK	1552	Motor Control B
E	RD	1553	Motor Control A
F	-	-	Not Used
G	YE/BK	1558	Channel B Encoder - Signal
H	D-BU/WH	1557	Channel A Encoder - Signal

Transfer Case Shift Control Module - C1 Terminal Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12084944 16-Way F Micro-Pack 100 Series (BK)
Pin	Wire Color	Circuit No.	Function
A1	D-GN/WH	1133	ATC Class 2 Serial Data
A2	L-GN	2659	Rear Differential Lock - High - Control
A3	PK	1561	Rear Differential Lock Indicator Control
A4	PU/WH	1565	4 'LO' Indicator - Control
A5	TN/BK	1566	4 'HI' Indicator - Control
A6	L-BU	1693	Switch Signal
A7	RD/WH	1556	Channel C Encoder - Signal
A8	-	-	Not Used
B1	-	-	Not Used
B2	YE/BK	1558	Channel B Encoder - Signal
B3	L-GN/BK	1563	4 'HI' Indicator - Control
B4	BN	1560	Neutral Indicator Control
B5	GY/BK	1694	4WD Low Signal
B6	BN/WH	1555	Channel P Encoder - Signal
B7	-	-	Not Used
B8	BK	1725	Rear Differential Lock - Low - Reference

Transfer Case Shift Control Module - C2 Terminal Identification

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

Transfer Case Shift Control Module - C3 Terminal Identification

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

Transfer Case Shift Control Switch - C1 Terminal Identification

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

Transfer Case Shift Control Switch - C2 Terminal Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12045813 4-Way F Metri-Pack 150 Series (WH)
Pin	Wire Color	Circuit No.	Function
A	GY	596	5-Volt Reference
B	L-GN/BK	1563	4 'HI' Indicator - Control
C	PU/WH	1565	4 'LO' Indicator - Control
D	TN/BK	1566	4 'HI' Indicator - Control