Transfer Case Control Connector End Views

Propshaft Speed Sensor - Front

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15449028 2-Way F GT 150 Series, Sealed (BK)
Pin	Wire Color	Circuit No.	Function
A	YE	400	Signal High - Front
B	PU	401	Signal Low - Front

Propshaft Speed Sensor - Rear

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15449028 2-Way F GT 150 Series, Sealed (BK)
Pin	Wire Color	Circuit No.	Function
A	L-BU	2221	Signal High - Rear
B	D-GN	2222	Signal Low - Rear

Transfer Case Encoder Motor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326642 5-Way F GT 280 Series, 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

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	Class 2 Serial Data
A2-A6	-	-	Not Used
A7	BK/WH	1554	Encoder Low Reference
A8	-	-	Not Used
B1-B5	-	-	Not Used
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-B8	-	-	Not Used

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	850	Ground
B	OG	1640	Battery Positive Voltage
C	BK	1552	Motor Control A
D	RD	1553	Motor Control B