Oxygen Sensor Replacement Estimate for GMC Syclone

GMC Syclone Oxygen Sensor Replacement costs $138 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$135 to $150
Labor: $70 -$80
Parts: $65 -$70
Average Dealer price
$224 to 232
Average Shop price
$165 to 170
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CarServiceYourMechanic PriceShop/Dealer Price
1991 GMC SycloneV6-4.3L TurboService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$145.22Shop/Dealer Price$178.54 - $245.84
1991 GMC SycloneV6-4.3L TurboService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$139.28Shop/Dealer Price$171.19 - $234.10
Show example GMC Syclone Oxygen Sensor Replacement prices
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Parts required for a GMC Syclone Oxygen Sensor Replacement

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283 reviews
Jason
12 years of experience
Jason was very professional ,called and let me know when he was arriving, and the job was done in a timely manner. Thanks" Your Mechanic" your service is truly needed and appreciated .
1993 GMC C1500 - SPARK PLUG REPLACEMENT
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Martin
37 years of experience
Marty showed up on time and performed the service quickly and accurately. Definitely recommend.
2009 GMC ACADIA - OIL CHANGE
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48 reviews
TJ
21 years of experience
TJ has done automotive work for us before and his work is always excellent. He explains what he is doing and answers all our questions in a way that we can understand. I highly recommend him!
2002 GMC ENVOY - BRAKE PADS REPLACEMENT (FRONT)
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13 reviews
Angelo
27 years of experience
Angelo was great! All I had to do was give him the TPS part and explain what was going on! Definitely will use again next time
2006 GMC ENVOY - THROTTLE/ACCELERATOR PEDAL POSITION SENSOR REPLACEMENT
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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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