2006 Chevy Trailbazer oxygen sensors

[chuck30157]

How many oxygen sensors are used in the 2006 4.2 Litre L6 engine?

[ProTech]

There are two oxygen sensors used on your vehicle. There is an engine monitoring oxygen sensor (#1) which is located in the exhaust manifold, and there is also a catalyst monitoring oxygen sensor (#2) located in the exhaust pipe right past the catalytic converter.

Hope this helps you!