Heated Oxygen Sensor (HO2S) Connector End Views

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12176897 4-Way F Metri-Pack 150 Series Sealed (GY)
Pin	Wire Color	Circuit No.	Function
A	TN	1664	HO2S Low Signal Bank 1 Sensor 1
B	PU/WH	1665	HO2S High Signal Bank 1 Sensor 1
C	BK/WH	3113	HO2S Heater Low Control Bank 1 Sensor 1
D	PK	539	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326423 4-Way M Metri-Pack 150 Series Sealed (L-GY)
Pin	Wire Color	Circuit No.	Function
A	TN/WH	1669	HO2S Low Signal Bank 1 Sensor 2
B	PU/WH	1668	HO2S High Signal Bank 1 Sensor 2
C	BN	2391	HO2S Heater Low Control Bank 1 Sensor 2
D	PK	1539	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12176897 4-Way F Metri-Pack 150 Series Sealed (GY)
Pin	Wire Color	Circuit No.	Function
A	TN	1667	HO2S Low Signal Bank 2 Sensor 1
B	PU	1666	HO2S High Signal Bank 2 Sensor 1
C	L-GN	3212	HO2S Heater Low Control Bank 2 Sensor 1
D	PK	539	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326423 4-Way M Metri-Pack 150 Series Sealed (L-GY)
Pin	Wire Color	Circuit No.	Function
A	TN	1671	HO2S Low Signal Bank 2 Sensor 2
B	PU	1670	HO2S High Signal Bank 2 Sensor 2
C	RD/WH	3223	HO2S Heater Low Control Bank 2 Sensor 2
D	PK	1539	Ignition 1 Voltage