Question about 2002 Chevrolet TrailBlazer
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Posted on Jan 02, 2017
SOURCE: location of oxygen sensors
I think there is more than two. Either way, they are located in the exhaust system. The pre-cat sensors are in the head pipes, just below the exhaust manifold, and then there will be one right behind the catalytic converter. You will need a 7/8 inch wrench or possibly a special O2 socket.
Posted on Apr 05, 2009
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