Oxygen Sensor Replacement Estimate for Pontiac G3

Pontiac G3 Oxygen Sensor Replacement costs $241 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$234 to $257
Labor: $77 -$88
Parts: $157 -$169
Average Dealer price
$417 to 441
Average Shop price
$288 to 303
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CarServiceYourMechanic PriceShop/Dealer Price
2009 Pontiac G3L4-1.6LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$259.88Shop/Dealer Price$321.58 - $470.72
2009 Pontiac G3L4-1.6LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$243.77Shop/Dealer Price$301.51 - $438.62
Show example Pontiac G3 Oxygen Sensor Replacement prices
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Parts required for a Pontiac G3 Oxygen Sensor Replacement

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283 reviews
27 years of experience
Patrick did a great job he is a very well qualified mechanic. And he is most pleasant to work with very courteous and helpful. We had one oxygen sensor that the GM company sent us that was the wrong plug and part. Patrick noticed it right way and I had to reschedule him to come back when I receive the replacement. WILLIAM L CRAYTON William L Crayton
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180 reviews
31 years of experience
I really would to thank you for a job well done. I will be calling you again for your service. I also will recommend you to my friends and family. Again THANK YOU, for your GREAT service.
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94 reviews
21 years of experience
Within one day of the quote, he arrived on time to replace the serpentine belt on my van, but diagnosed a bigger problem which was why it broke in the first place. He had to come back two additional times, but arrived on time each time. The overall cost, while three time more than quoted, was still much cheaper than I would have paid at the shop. He left the area clean and we are completely satisfied. Would definitely use him and this service again.
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87 reviews
27 years of experience
I was very happy with the service.
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All about Oxygen Sensor Replacement

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor. Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor. If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

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