Transfer Case Control Connectors

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. 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		15326815 4-Way F GT 150 Sealed 4.0 (BK)
Pin	Wire Color	Circuit No.	Function
A	L-BU	1296	Axle Actuator - Control
B	BK	350	Ground
C	BK/WH	1695	Axle Switch Signal
D	BN	241	Ignition 3 Voltage

Propshaft Speed Sensor - Front

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15336024 2-Way F GT 150 Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	YE	400	Signal High - Front
2	PU	401	Signal Low - Front

Propshaft Speed Sensor - Rear

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15336024 2-Way F GT 150 Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	L-BU	2221	Signal High - Rear
2	D-GN	2222	Signal Low - Rear

Transfer Case Encoder Motor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326654 8-Way F GT 280 Sealed 5.8 (BK)
Pin	Wire Color	Circuit No.	Function
A	GY	605	5-Volt Reference
B	BN/WH	1555	Encoder Signal
C	BK/WH	1554	Encoder Low Reference
D	BK	1552	Motor Control A
E	RD	1553	Motor Control B
F	OG	1640	Battery Positive Voltage
G	TN	1569	Lock Solenoid Control
H	-	-	Not Used

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	L-BU	1296	Axle Actuator - Control
A3	PK	1561	AWD 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	BK/WH	1554	Encoder Low Reference
A8	-	-	Not Used
B1	-	-	Not Used
B2	TN	1569	Lock Solenoid Control
B3	L-GN/BK	1563	2 HI Indicator - Control
B4	BN	1560	Neutral Indicator Control
B5	GY/BK	1694	4WD Low Signal
B6	BN/WH	1555	Encoder Signal
B7	-	-	Not Used
B8	BK/WH	751	Ground

Transfer Case Shift Control Module C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12084945 16-Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit No.	Function
A1	PU	401	Signal Low - Front
A2	YE	400	Signal High - Front
A3-A7	-	-	Not Used
A8	GY	605	5-Volt Reference
B1	L-BU	2221	Signal High - Rear
B2	D-GN	2222	Signal Low - Rear
B3-B5	-	-	Not Used
B6	BK/WH	1695	Axle Switch 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 Metri-Pack 280 Series (BK)
Pin	Wire Color	Circuit No.	Function
A	BK	2250	Ground
B	OG	1640	Battery Positive Voltage
C	BK	1552	Motor Control A
D	RD	1553	Motor Control B

Transfer Case Shift Control Switch

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15332161 12-Way F GT 150 (BK)
Pin	Wire Color	Circuit No.	Function
A	PU/WH	1565	4 LO Indicator - Control
B	PU/WH	1382	LED Dimming Signal
C	BN/WH	230	Instrument Panel Lamps Dimming Control
D	BK	2250	Ground
E	TN/BK	1566	4 HI Indicator - Control
F	PK	1561	AWD Indicator Control
G	BN	1560	Neutral Indicator Control
H	BN	241	Ignition 3 Voltage
J	GY	596	5-Volt Reference
K	-	-	Not Used
L	L-GN/BK	1563	2 HI Indicator - Control
M	L-BU	1693	Switch Signal