Transfer Case Control Connectors

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Front Axle Actuator

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15324541 4-Way F Metri-Pack 150 Series Sealed (BLU)
Pin	Wire Color	Circuit No.	Function
A	BLK/WHT	1695	Axle Switch Signal
B	LT BLU	1296	Axle Actuator - Control
C	BRN	241	Ignition 3 Voltage
E	BLK	2150	Ground

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	LT BLU	1296	4WD Relay Coil Supply Voltage
A3	-	-	Not Used
A4	PPL/WHT	1565	4 "LO" Indicator-Control
A5	TAN/BLK	1566	4 "HI" Indicator-Control
A6	LT BLU	1693	Switch Signal
A7	BLK/WHT	1554	Encoder Low Reference
A8	BLK/WHT	1851	Ground
B1-B2	-	-	Not Used
B3	LT GRN/BLK	1563	2 "HI" Indicator-Control
B4	BRN	1560	Neutral Indicator Control
B5	GRY/BLK	1694	4WD Low Signal
B6	BRN/WHT	1555	Encoder Signal
B7-B8	-	-	Not Used

Transfer Case Shift Control Module - C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12064860 16-Way F Metri-Pack 100 Series (GRY)
Pin	Wire Color	Circuit No.	Function
A1	PPL	401	Signal Low-Front
A2	YEL	400	Signal High-Front
A3-A7	-	-	Not Used
A8	LT GRN/BLK	431	5 Volt Reference
B1	LT BLU	2221	Signal High-Rear
B2	DK GRN	2222	Signal Low-Rear
B3-B5	-	-	Not Used
B6	BLK/WHT	1695	4WD Engaged 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 Metri-Pack 280 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	BLK	2150	Ground
B	ORN	1640	Battery Positive Voltage
C	BLK	1552	Motor Control A
D	RED	1553	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	TAN/BLK	1566	4 "HI" Indicator-Control
D	PPL/WHT	1565	4 "LO" Indicator-Control
E	LT GRN/BLK	1563	2 "HI" Indicator-Control
F	LT BLU	1693	Switch Signal

Transfer Case Encoder Motor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326642 5-Way F GT 280 Series Sealed (BLK)
Pin	Wire Color	Circuit No.	Function
A	LT GRN/ BLK	431	5 Volt Reference
B	BRN/WHT	1555	Encoder Signal
C	BLK/WHT	1554	Encoder Low Reference
D	BLK	1552	Motor Control A
E	RED	1553	Motor Control B