Oxygen Sensors
Chevy Blazer
Chevy Trailblazer

Where is the O2 sensor on the 03 Chevy Trailblazer and is there any prep or post work you need to do before changing it?

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2007-04-19 15:58:28
2007-04-19 15:58:28

Ther are two oxygen sensors on the system. One is located at the exhaust manifold and the other just after the Cat. There are several reasons why you may get these codes and at $100 per sensor you do not want to be wrong. If you are destroying a sensor then you should find out why before replacing it.

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