you must be refering to the catalytic converter for bank one which is refering to the left or right bank of the engine
There are a number of oxygen sensors on the 1997 Cadillac STS. These are found on the firewall, inside the exhaust manifold, and behind the catalytic converter depending on the engine model.
catalytic converter is probably clogged
Cadillac STS was created in 2005.
No, ..
CADILLAC STS is totally better
Cadillac STS-V was created in 2005.
Bank 1 refers to the side of the car with the number 1 cylinder, on your vehicle it is the rear side of the engine. Sensor 2 is the second sensor, the one after the catalytic convertor, in the exhaust pipe coming from the engine.
Following the 2008 Cadillac STS and 2010 model update, Cadillac decided to discontinue the STS. As a result, the last STS to be produced was put together on May 4, 2011.
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