Depends on which engine you have but you have several and all 02 sensors are threaded into the exhaust system at various points.
where is the O2 sensor on a 2002 chevy trailblazer
There are several and they are all located on the exhaust system.
Where is located the crankshaft sensor in Chevy avalanche 2002 engine 5.3?
A 2002 Chevy Cavalier 2.2 liter has a total of 1 oxygen sensor located in the exhaust manifold. It constantly monitors oxygen levels in the exhaust to allow the computer to make mixture adjustments.
The bank 1 sensor 1 oxygen sensor on a 2002 Honda Accord is located on the header. It is right next to the sensor circuit.
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where is the temperture sensor located on a 2002 chevy trailblazer with a 4200 motor
The knock sensor is located on top of the block in a 4.8 2002 engine. The intake will have to be removed to get to the sensor.
The 2002 Chevy Impala throttle position sensor can be found on the top of the engine. The throttle position sensor will be near the injector fuel pump.
The cam sensor is located on the left side of the engine (as your looking at it) on the valve cover
There is two of them uder the intake
The 2002 Chevy Cavalier 02 sensor can be found attached to the air cleaner housing. The O2 sensor will be on the back side of the air cleaner housing.