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you have 4 oxygen(O2) sensors on your truck 2 before the catalytic converters and 2 after. if your asking based on a DTC heres the order: bank 1, sensor 1 = driver side before cat bank 1, sensor 2 = driver side after cat bank 2, sensor 1 = passenger side before cat bank 2, sensor 2 = passenger side after cat

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14y ago
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Q: How many o2 sensors does a 2001 Chevrolet silverado have?
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