Question about 2004 Chevrolet TrailBlazer
This is the sensor downstream, near the transmission. This is the more difficult of the two only because of the location of the wiring. It's wired into a plug near the top of the tranny, but not too bad. The one upstream, in the engine compartment is in plain view when leaning over the passenger side fender. You can rent a special 02 sensor socket, has a slot on the side of it for the wiring. Other than that, their both pretty straight forward. Don't forget to put a small amount of anti-size for future work.
Posted on Nov 23, 2010
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Posted on Jan 02, 2017
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