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International Automotive Technicians Network
'05 and newer GM 02 Sensor Replacement Re-Learn Required
Posted to Technical Tips Forum on 8/21/2007 3 Replies

If you're replacing an 02 sensor on an '05 or later model GM, a re-learn may be required because of the new oxygen sensor temperature control strategy called RCOHT (Resistance Calculated Oxygen Sensor Heater Temperature).

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