GM 19178930
Oxygen Sensor

The first thing to do when it comes to servicing bank 2 sensor 1 of the Oxygen Sensor is to ensure that the pigtail and the connector of the heated Oxygen Sensor are intact, as the damage to the two will undermine its ability to function. Use care with the sensor, so no drops, and allow the in-line connector and the louvered end not to get contaminated; never use any cleaning solvents, or any attempts repair on the wiring, connector, and terminals have the ability to obstruct the need for external air reference and performance degradation. If the sensor is dropped or the pigtail wiring, terminals or connection is damaged, change the sensor. Do not forget that removal might be problematic in case the temperature is under 48 °c (120 °F), and if too much force is used, this might damage the Exhaust Manifold or the threads of the pipes. Initiate by lifting the vehicle and removing the ho2s electrical connector and then ordinate the heated Oxygen Sensor in an assertive manner. For installation, use the anti-seize compound p/n 5613695 on heated Oxygen Sensor threads to allow the removal of the Oxygen Sensor needed in the future; new or service sensors are usually supplied pre-coated. Mount the heated Oxygen Sensor and tighten it to 41 nm (30 lb ft), reconnect ho2s electrical connector, and lower the vehicle.

Tighten the sensor to 41 N.m (30 lb ft).

It is crucial to use special anti-seize compound (P/N 5613695) on the threads.

It is crucial to use special anti-seize compound (P/N 5613695) on the threads.

Coat the threads with anti-seize compound P/N 5613695, or an equivalent if necessary.

Ensure to apply the anti-seize compound to the threads.