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2002 Chevy Blazer Where is the O2 sensor for bank 2 sensor 1?

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pass.side at exe manifold Bank 1 is where cylender 1 is. Bank 2 is on the other side of which is on the passenger side of the blazer. Oxygen sensor 1 is the first sensor closer to the front of the blazer. Sensor 2 would be past the catalytic converter on the same side.
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