Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
You'll find bank1,sensor2 behind the catalytic converter.
It it the Catalyst monitoring oxygen sensor....
Not always, there are some pick ups that use 4 sensors and only one is down stream of the Cat.
Many of the (newer) 06 and up cars are using mutiple sensors per side. Up to 6 sensors total..
Have a great weekend....Thanks, Josh