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


   
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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!
_______________

GM Dealer Technician For 18+ Years
In the automotive industry for 20+


   
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