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How do i fix this issue and what parts do i need

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I have a 2006 chevy trailblazer and it has p0030 and p0135 codes

Vehicle: 2006 Chevrolet trailblazer
related to an answer for: 2006 Chevy Trailblazer P0030 P0135

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Both of these codes are for Bank 1 Sensor 1 02 sensor, the only possible fix is replace the 02 sensor

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