Heated Oxygen Sensor Replacement - Bank 1 Sensor 2

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Raise and support the vehicle. Lifting and Jacking the Vehicle
1	Heated Oxygen Sensor WARNING: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool. WARNING: Avoid contact with HOT components. Wear safety glasses and protective gloves to avoid personal injury. 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 . CAUTION: The use of excessive force may damage the threads in the exhaust manifold/pipe. Procedure Disconnect the heated oxygen sensor electrical connector. Use the J-39194 - B wrench to remove and install the heated oxygen sensor. NOTE: The heated oxygen sensor in-line connector and louvered end MUST be kept clear of all grease, dirt, and other contaminants. Do NOT use cleaning solvents of any type. Do NOT drop or roughly handle the sensor. The heated oxygen sensor MAY be difficult to remove when the engine temperature is less than 48°C (120°F). A special anti-seize compound is used on the heated oxygen sensor threads. The compound consists of liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will have the compound already applied to the threads. IF a sensor is removed and is to be reinstalled, the threads MUST have an anti-seize compound applied before installation. Adhesives, Fluids, Lubricants, and Sealers Tighten 42 N.m (31 lb ft) Special Tools J-39194 - B Heated Oxygen Sensor Wrench Equivalent regional tools: Special Tools (Diagnostic Tools)

Callout

Component Name

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

Heated Oxygen Sensor

WARNING:

In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

WARNING:

Avoid contact with HOT components. Wear safety glasses and protective gloves to avoid personal injury.

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 .

CAUTION:

The use of excessive force may damage the threads in the exhaust manifold/pipe.

Procedure

Disconnect the heated oxygen sensor electrical connector.
Use the J-39194 - B wrench to remove and install the heated oxygen sensor.

NOTE:

The heated oxygen sensor in-line connector and louvered end MUST be kept clear of all grease, dirt, and other contaminants. Do NOT use cleaning solvents of any type. Do NOT drop or roughly handle the sensor.
The heated oxygen sensor MAY be difficult to remove when the engine temperature is less than 48°C (120°F).
A special anti-seize compound is used on the heated oxygen sensor threads. The compound consists of liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will have the compound already applied to the threads. IF a sensor is removed and is to be reinstalled, the threads MUST have an anti-seize compound applied before installation. Adhesives, Fluids, Lubricants, and Sealers

Tighten
42 N.m (31 lb ft)
Special Tools
J-39194 - B Heated Oxygen Sensor Wrench
Equivalent regional tools: Special Tools (Diagnostic Tools)