Heated Oxygen Sensor Replacement - Bank 2 Sensor 2

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Heated Oxygen Sensor - Bank 2 Sensor 2

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
1	Electrical Connector
2	Heated Oxygen Sensor CAUTION: Refer to Component Fastener Tightening Caution . CAUTION: Refer to Heated Oxygen and Oxygen Sensor Caution . CAUTION: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution . Procedure If reinstalling the old sensor, coat the threads with anti-seize compound. If replacing, perform the HO2S heater resistance learned values reset. Refer to HO2S Heater Resistance Learned Values Reset If replacing, perform the HO2S heater learn. Refer to HO2S Heater Learn NOTE: A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before reinstallation. Tighten 42 N.m (31 lb ft)

Callout

Component Name

Preliminary Procedure
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle

Electrical Connector

Heated Oxygen Sensor

CAUTION:

Refer to Component Fastener Tightening Caution .

CAUTION:

Refer to Heated Oxygen and Oxygen Sensor Caution .

CAUTION:

Refer to Heated Oxygen Sensor Resistance Learn Reset Caution .

Procedure

If reinstalling the old sensor, coat the threads with anti-seize compound.
If replacing, perform the HO2S heater resistance learned values reset. Refer to HO2S Heater Resistance Learned Values Reset
If replacing, perform the HO2S heater learn. Refer to HO2S Heater Learn

NOTE:

A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.

Tighten
42 N.m (31 lb ft)