On a 2003 Oldsmobile Silhouette, the heated oxygen sensor (HO2S) bank 1 sensor 1 is located in the exhaust system, specifically upstream of the catalytic converter. It is typically found on the exhaust manifold or in the front pipe leading to the catalytic converter. This sensor monitors the oxygen levels in the exhaust gases to help regulate the engine's air-fuel mixture.
There are actually two oxygen sensors on a 2000 Oldsmobile Silhouette. There is one located in the exhaust system just before the catalytic converter. There is also another oxygen sensor in the air intake tube leading from the air filter.
Under hood, center, rear engine area, mounted in exhaust manifold
You need all sensors it was designed and built with.
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
A 1969 car would not have an oxygen sensor.
The 1992 Oldsmobile Cutlass supreme has two oxygen sensors. Both oxygen sensors are located on the outside of the air cleaner housing.
The oxygen sensor on the 1999 Oldsmobile Cutlass Sierra is located on the lower exhaust. If you need to replace it, they are available for about $20 online.
The O2 sensor is in the rear exhaust maniford. It can be changed from above, but you'll need to use a mirror or work by braille.