Heated Oxygen Sensor (HO2S) Sensor Connector End Views

Heated Oxygen Sensor (HO2S) Sensor 1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12160479 4-Way F Metri-Pack 150 Series Sealed (BLK)
Pin	Wire Color	Circuit No.	Function
A	TAN	1667	HO2S Low Signal (Bank 1 Sensor 1)
B	PPL	1666	HO2S High Signal (Bank 1 Sensor 1)
C	DK GRN	676	HO2S Heater Low Control (Bank 1 Sensor 1)
D	PNK	1039	Ignition 1 Voltage

Heated Oxygen Sensor (HO2S) Sensor 2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15326423 4-Way M Metri-Pack 150 Series Sealed (GRY)
Pin	Wire Color	Circuit No.	Function
A	TAN/WHT	1669	HO2S Low Signal (Bank 1 Sensor 2)
B	PPL/WHT	1668	HO2S High Signal (Bank 1 Sensor 2)
C	BLK/WHT	1423	HO2S Heater Low Control (Bank 1 Sensor 2)
D	BRN	241	Ignition 3 Voltage