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Carguyjosh, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 2172
Experience:  ASE certified tech, 17yrs experience
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2003 cadillac deville, 32v northstar, location of 02 sensor

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2003 cadillac deville, 32v northstar, location of 02 sensor bank 1 #2

You'll find bank1,sensor2 behind the catalytic converter.

It it the Catalyst monitoring oxygen sensor....


Thanks, Josh

Carguyjosh and other Cadillac Specialists are ready to help you
Customer: replied 7 years ago.
Hi Josh, are all #2 o2 sensors post cat?

Thank you, Dave

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..


Thanks, Josh

Customer: replied 7 years ago.
Thanks Josh


Have a great weekend....Thanks, Josh