Cooling System Connector End Views

Auxiliary Water Pump (HP2)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12084126 2-Way F Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	BK	550	Ground
2	TN/WH	5543	Auxiliary Heater Pump Voltage

Coolant Level Switch (8.1L)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12052644 2-Way F Metri-Pack 150 Series Sealed (GY)
Pin	Wire Color	Circuit No.	Function
A	L-GN	1478	Coolant Level Switch Signal
B	BK	550	Ground

Coolant Level Switch (Diesel)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15324243 2-Way F Metri-Pack 150 Series Sealed (GY)
Pin	Wire Color	Circuit No.	Function
A	L-GN	1478	Coolant Level Switch Signal
B	BK	550	Ground

Cooling Fan - Left (10 Series)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15454358 2-Way F 630 GT (BK)
Pin	Wire Color	Circuit No.	Function
A	YE	5358	Cooling Fan Motor Control
B	GY	532	Cooling Fan Motor Supply Voltage

Cooling Fan - Right (10 Series)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15454358 2-Way F 630 GT (BK)
Pin	Wire Color	Circuit No.	Function
A	BK	250	Ground
B	L-BU	409	Cooling Fan Motor Supply Voltage

Starter/Generator Control Module Coolant Pump (HP2)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12131678 2-Way F Sealed (BK)
Pin	Wire Color	Circuit No.	Function
1	BK	150	Ground
2	L-BU	703	Ignition 1 Voltage