We dismantle the sensor with the ignition off. We remove the right mudguard of the engine compartment (see Removal the engine compartment mudguards).
We move the wiring harness block of the engine management system from the plastic holder, fixed from below on the radiator of the cooling system.
By pressing the locking lever of the harness connector By pressing the locking lever of the harness connector of the engine management system…
…we disconnect the connectors of the engine management system wiring harness and the wiring harness of the diagnostic oxygen concentration sensor.
We pass the sensor wiring harness block through the ring of the 22 mm open-end wrench and put the ring of the wrench on the sensor hexagon.
Turning the key counterclockwise, we unscrew the sensor from the hole in the intermediate pipe..
…and remove the diagnostic oxygen concentration sensor.
We install the diagnostic oxygen concentration sensor in the reverse order. To prevent the sensor from "sticking" to the intermediate pipe during vehicle operation, before installing it, we apply a thin layer of anti-seize high-temperature additive based on graphite to the threaded part of the sensor.
Information taken from the official website «ChevyMan»