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Buick
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1999
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Century V6-3100 3.1L VIN M SFI
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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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Sensors and Switches - Computers and Control Systems
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Oxygen Sensor
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Locations
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Heated Oxygen Sensor (HO2S) Bank 1
Heated Oxygen Sensor (HO2S) Bank 1
In the rear bank exhaust manifold, behind the center of the engine