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Buick
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1999
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Regal V6-3.8L SC VIN 1
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Oxygen Sensor
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Locations
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Heated Oxygen Sensor (HO2S) Bank 2
Heated Oxygen Sensor (HO2S) Bank 2
In the exhaust system, behind the catalytic converter