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Chevrolet
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2009
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Traverse LS, AWD
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System & Fuel System - 3.6L - DTC P0638 To DTC P2635
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DTC P2271 or P2273
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DTC Descriptors
DTC Descriptors
DTC P2271
HO2S Signal Stuck Rich Bank 1 Sensor 2
DTC P2273
HO2S Signal Stuck Rich Bank 2 Sensor 2