Transfer Case Control Connector End Views

WARNING: This page is about a different car, the 2006 GMC Yukon XL and 2006 GMC Yukon. However, it is still accessible from the selected car via links, so may be relevant.

Transfer Case Shift Control Module - C1

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-A3	-	-	Not Used
A4	PU/WH	1565	4 LO Indicator Control
A5	PK	1561	AWD 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	-	-	Not Used
B4	BN	1560	Neutral Indicator Control
B5	GY/BK	1694	4WD Low Signal
B6	BN/WH	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 (GN)
Pin	Wire Color	Circuit No.	Function
A1-A7	-	-	Not Used
A8	BK/WH	1554	Encoder Signal Ground
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

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12052856 4-Way F Micro-Pack 280 Series (BK)
Pin	Wire Color	Circuit No.	Function
A	BK	2150	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

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	-	-	Not Used
C	BN	1560	Neutral Indicator Control
D	-	-	Not Used
E	PU/WH	1382	LED Dimming Supply
F	BN/WH	230	Instrument Panel Lamps Dimming Control
G	BN	241	Ignition 3 Voltage
H	GY	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 (BK)
Pin	Wire Color	Circuit No.	Function
A-B	-	-	Not Used
C	PK	1561	AWD Indicator Control
D	PU/WH	1565	4 LO Indicator Control
E	-	-	Not Used
F	L-BU	1693	Switch Signal

Transfer Case - Encoder Motor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326654 8-Way F GT 280 Series Sealed (BK)
Pin	Wire Color	Circuit No.	Function
A	BK/WH	1554	Encoder Signal Ground
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