Chevrolet 12617332 Sensor,Heated Oxygen(Position 2)

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When servicing an oxygen sensor, it is important to be careful and avoid damaging or removing the pigtail or electrical connector, as this will render the sensor useless. Keep grease, dirt, and other contaminants away from the electrical connector and the louvered end of the sensor, and do not use cleaning solvents on the sensor. Oxygen sensors are delicate, so handle them with care and avoid dropping or rough handling. Make sure the silicone boot on the sensor is installed correctly to prevent melting and ensure proper operation. For replacement, note that upstream sensors are installed in the exhaust manifolds or pipes, while downstream sensors are located below the catalytic converters. Disconnect the negative battery terminal cable, locate the sensor and disconnect the electrical connector, then unscrew the sensor using a wrench or oxygen sensor socket. Apply anti-seize compound to the threads if reusing the old sensor, and install the new sensor without applying anti-seize compound. Finally, tighten the oxygen sensor to the specified torque.