Transfer Case Control Connectors

Transfer Case Shift Control Module C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12052107 32-Way F Micro-Pack 100 Series (ORN)
Pin	Wire Color	Circuit No.	Function
E1-E8	-	-	Not Used
E9	DK GRN/WHT	1133	ATC Class 2 Serial Data
E10	BRN	441	Ignition 3 Voltage
E11	-	-	Not Used
E12	YEL	400	Signal High - Front
E13	PPL	401	Signal Low - Front
E14	-	-	Not Used
E15	BLK	750	Ground
E16	BLK	750	Ground
F1-F4	-	-	Not Used
F5	LT BLU	2221	Signal High - Rear
F6	DK GRN	2222	Signal Low - Rear
F7-F16	-	-	Not Used

Transfer Case Shift Control Module C2

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	1552	Motor Control A
B	RED	1553	Motor Control B
C	BLK	750	Ground
D	ORN	1540	Battery Positive Voltage

Propshaft Speed Sensor - Front

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12162194 2-Way F Metri-Pack 150.2 Series, Sealed, Pull-To-Seat (BLK)
Pin	Wire Color	Circuit No.	Function
A	YEL	400	Signal High - Front
B	PPL	401	Signal Low - Front

Propshaft Speed Sensor - Rear

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12162194 2-Way F Metri-Pack 150.2 Series, Sealed, Pull-To-Seat (BLK)
Pin	Wire Color	Circuit No.	Function
A	LT BLU	2221	Signal High - Rear
B	DK GRN	2222	Signal Low - Rear

Transfer Case Encoder Motor

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12077900 2-Way F Metri-Pack 280 Series, Sealed (BLK)
Pin	Wire Color	Circuit No.	Function
A	BLK	1552	Motor Control A
B	RED	1553	Motor Control B