The light came on to :"Service engine soon" It was diagnosed to replace the sensor.
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2003 Pontiac Montana Question: What is the cost to replace an oxyigen sensor
Answer #1fernando April 10, 2010, 14:33Master
Try the Estimator; http://repairpal.com/estimator
Search for the service "Oxygen Sensor Replacement"
Answer #2Visitor, December 17, 2010, 19:32
it cost me about $40 for the part, $50 deposit to rent the tool you need to remove/install the sensor. The real experience was finding and reaching the sensor.