Question

Where is the Bank 1 Sensor 1 O2 Sensor located on a 2011 Chevrolet Traverse V6? Is it on the front of the engine right above the catalytic converter?

Answer 1

After catalytic Converter, next to the firewall

Comments

Which is upstream and which is downstream

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Upstream is also called "Front Oxygen Sensor" or "Oxygen Sensor 1"

- Upstream = Sensor 1 = Front Sensor

Downstream is also called "Rear Oxygen Sensor" or "Oxygen Sensor 2"

- Downstream = Sensor 2 = Rear Sensor

Answer 2

HI there

Bank 1 is the rear bank on the engine closest to the firewall. Sensor 1 is the sensor before the catalytic converter.