Oxygen Sensor Replacement Estimate for Chevrolet G20

Chevrolet G20 Oxygen Sensor Replacement costs $103 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$94 to $141
Labor: $70 -$80
Parts: $24 -$61
Average Dealer price
$141 to 215
Average Shop price
$113 to 160
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CarServiceYourMechanic PriceShop/Dealer Price
1989 Chevrolet G20V8-5.7LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$98.52Shop/Dealer Price$120.17 - $152.44
1994 Chevrolet G20V8-5.0LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$97.99Shop/Dealer Price$119.58 - $151.51
1985 Chevrolet G20V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$105.82Shop/Dealer Price$129.32 - $167.09
1988 Chevrolet G20V6-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$97.99Shop/Dealer Price$119.55 - $151.47
1991 Chevrolet G20V8-5.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$106.49Shop/Dealer Price$130.15 - $168.42
1994 Chevrolet G20V8-5.0LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$106.49Shop/Dealer Price$130.13 - $168.39
1983 Chevrolet G20V8-6.2L DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$106.66Shop/Dealer Price$130.44 - $168.89
1994 Chevrolet G20V6-4.3LService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$142.55Shop/Dealer Price$175.27 - $240.63
Show example Chevrolet G20 Oxygen Sensor Replacement prices

Parts required for a Chevrolet G20 Oxygen Sensor Replacement

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Real customer reviews from Chevrolet owners like you.

450 reviews
Ben
36 years of experience
Did an outstanding job, showed up went to work right away, showed me the parts he replaced and showed me the diagnostic on how things should be working on my truck. GREAT JOB BEN
2003 CHEVROLET SILVERADO 1500 - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM, REAR/LOWER/DOWNSTREAM)
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308 reviews
Dan
34 years of experience
Did an amazing job! Professional, sharp, direct, and very quick. No complaints at all. Dan's the man.
2006 CHEVROLET COBALT - OXYGEN SENSOR REPLACEMENT (FRONT/UPPER/UPSTREAM)
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249 reviews
Russell
19 years of experience
Russel professional and clear with his communication. I would happily work with him again in the future.
1988 CHEVROLET G20 - CAR IS NOT STARTING INSPECTION
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129 reviews
David
23 years of experience
It was a pleasure to have David again to look over the van. He is always very polite and upfront on what needed to be done on the van.
1995 CHEVROLET G20 - BRAKE SYSTEM INSPECTION
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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.

Oxygen Sensor Replacement Estimates for Popular Chevrolet Models