GM 19209808
Oxygen Sensor

To replace the Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1, first, raise the vehicle. Remove the clip that holds the connectors of the HO2S together, then unplug the O2S connectors and remove the HO2S with the Oxygen Sensor Wrench (J39194-B). When installing the new sensor be sure that you apply anti-seize compound GM P/N 5613695 if required as that is a special compound that contains liquid graphite and glass beads and makes for easy removal down the road. Being sure that the HO2S is fitted in place, install it using the Oxygen Sensor Wrench (J 39194-B) and tighten it to 42 N.m (31 lb ft). Lastly, attach the HO 2S harness connector and drop the vehicle.

Start the replacement of Bank 2 Sensor 2 Heated Oxygen Sensor by using proper vehicle support and elevated position. Separate the CPA retainer and unplug the HO2S electric connection. Then, remove the bank 2 HO2S . Special anti-seize compound consisting of liquid graphite and glass beads must be used for threading the HO2S and manufacturers supply this compound before delivery. To reinstall the original HO2S you should apply the anti-seize compound GM P/N 12377953 or another equivalent product to the threads. Fasten the bank 2 HO2S using a torque of 42 N.m (31 lb ft). Connect the HO2S electrical connector before installing the CPA retainer while lowering the vehicle to complete the installation.

Yes, new service sensors should already have this compound.

First, raise and support the vehicle appropriately.

Bank 2 refers to the left bank.

Apply anti-seize compound P/N 5613695 or equivalent if reusing a sensor.

Connect the HO2S electrical connector for the 6.0L engine first, followed by the 4.8L or 5.3L engine.

Remove the HO2S.

Install the HO2S and tighten it to 42 N.m (31 lb ft).

Unbolt the front propeller shaft from the front differential.

Install the HO2S using the Oxygen Sensor Wrench (J 39194-B) and tighten it to 42 N.m (31 lb ft).

Coat the threads with anti-seize compound GM P/N 5613695 if necessary.

If necessary, coat the threads of the new oxygen sensor with anti-seize compound GM P/N 5613695.

Connect the HO2S harness connector and lower the vehicle.

Disconnect the connector for the HO2S.

Reconnect the HO2S harness connector and lower the vehicle.

Lower the vehicle.

The HO2S 2 may be difficult to remove when the engine temperature is less than 48°C (120°F), and excessive force may damage the threads in the exhaust pipe.

Finally, lower the vehicle.

When installing, if reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953 or equivalent.

Remove the clip securing the HO2S to the engine harness.

First, raise and support the vehicle.

Use the Oxygen Sensor Wrench (J 39194-B).

Install the bank 1 HO2S and tighten it to 42 N.m (31 lb ft).

Tighten it to 42 N.m (31 lb ft).

Disconnect the HO2S electrical connector.

Yes, they come with this compound pre-applied.

Connect the HO2S electrical connector for the 6.0L engine first, then for the 4.8L or 5.3L engine.

Disconnect the connector for the HO2S.

Connect the HO2S electrical connector.

Disconnect the HO2S electrical connector.

Ensure to coat the threads with anti-seize compound GM P/N 12377953 or an equivalent.

Apply anti-seize compound GM P/N 12377953, or equivalent.

Install the CPA retainer.

Reattach the HO2S connector clip to the frame, disconnect the CPA retainer, and lower the vehicle.

Use the Oxygen Sensor Wrench (J 39194-B) to remove the HO2S.

Use the Oxygen Sensor Wrench (J 39194-B) to remove it.

Liquid graphite and glass beads to facilitate future removal.

Disconnect the CPA retainer and remove the HO2S from the clips.

If necessary, coat the threads of the new oxygen sensor with anti-seize compound GM P/N 5613695.

First raise and support the vehicle.

Remove the HO2S using the Oxygen Sensor Wrench (J 39194-B).

Use the Oxygen Sensor Wrench (J 39194-B) to install it.

Connect the HO2S electrical connector.

Disconnect the connector position assurance (CPA) retainer and then disconnect the HO2S pigtail electrical connector from the engine wiring harness electrical connector.

Reconnect the HO2S electrical connector and the CPA retainer, then lower the vehicle.

First, raise and support the vehicle.

Install the HO2S using the Oxygen Sensor Wrench (J 39194-B) and tighten the sensor to 42 N.m (31 lb ft).

Repeat the process of removing the HO2S connector from the crossmember, disconnecting the CPA retainer, and the electrical connector.

A special anti-seize compound, consisting of liquid graphite and glass beads.

If necessary, bolt the front propeller shaft to the front differential.

Install the new HO2S using the Oxygen Sensor Wrench (J 39194-B) and tighten it to 42 N.m (31 lb ft).

Tighten it to 42 N.m (31 lb ft).

Tighten it to 42 N.m (31 lb ft).

Remove the HO2S using the Oxygen Sensor Wrench (J 39194-B).

The anti-seize compound consists of liquid graphite and glass beads to facilitate future removal.

Raise and support the vehicle.