GMC R3500 Oxygen Sensor Replacement at your home or office.

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Average rating from customers who
received a Oxygen Sensor Replacement.
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$110.23 - $120.23

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Average rating from customers who
received a Oxygen Sensor Replacement.
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Oxygen Sensor Replacement Estimate for GMC R3500

GMC R3500 Oxygen Sensor Replacement costs $115 on average.

CarServiceEstimateShop/Dealer Price
1990 GMC R3500V8-7.4LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$145.47Shop/Dealer Price$172.37 - $226.57
1987 GMC R3500V8-5.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$145.47Shop/Dealer Price$172.43 - $226.67
1991 GMC R3500V8-5.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$150.47Shop/Dealer Price$176.71 - $230.41
1989 GMC R3500V8-6.2L DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$145.47Shop/Dealer Price$174.11 - $229.61
1987 GMC R3500V8-6.2L DieselService typeOxygen Sensor - Front/Upper/Upstream ReplacementEstimate$145.47Shop/Dealer Price$171.21 - $224.53
1987 GMC R3500V8-7.4LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$145.47Shop/Dealer Price$169.28 - $221.15
1991 GMC R3500V8-6.2L DieselService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$150.47Shop/Dealer Price$175.99 - $229.16
1990 GMC R3500V8-5.7LService typeOxygen Sensor - Rear/Lower/Downstream ReplacementEstimate$140.47Shop/Dealer Price$166.58 - $220.19
Show example GMC R3500 Oxygen Sensor Replacement prices

Oxygen Sensor Replacement Service

What is the Oxygen Sensor all about?

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-MATROX-1

When replacing the oxygen sensor remember:

  • Many oxygen sensors are damaged by leaking oil or coolant. If that is the case, the cause of that leak needs to be identified and repaired, or else the replacement oxygen sensor will be damaged as well.
  • New vehicles require specific oxygen sensors, and not the universal sensors that were common prior to 1996.

How it's done:

  • Scan the computer in the car for codes.
  • Inspect for vacuum leaks and holes in the exhaust system.
  • Remove and replace the oxygen sensor if it is bad.
  • Check electrical connections.
  • Check for proper operation of oxygen sensors.
  • Clear diagnostic codes.
  • Test drive car.

Our recommendation:

Keep up with the tune-ups. If check engine light is on, don't drive the car too long without getting it inspected. If check engine light is flashing, pull over and get the car towed to avoid costly repairs. Ask the mechanic to inspect the vacuum hoses and leaks in the exhaust system. If the vacuum hose or exhaust system is leaking, it will display an oxygen sensor fault code. Replacing an oxygen sensor may not fix the problem.

What common symptoms indicate you may need to replace the Oxygen Sensor?

  • Check Engine light is on.
  • Car is getting poor gas mileage.
  • Emission test fails.

How important is replacing the oxygen sensor?

Your vehicle has multiple oxygen sensors, and they all help the car run optimally. The front sensors measure how much oxygen is in the exhaust stream to measure how rich or lean the gases leaving the gas chamber are. The rear sensors measure the oxygen content of the gases as they leave the catalytic converter. The oxygen sensors then relay this information to your vehicle’s electronic control unit, so that it can adjust as necessary. Because cars depend on an ideal fuel-to-air ratio to function optimally, the oxygen sensors are leaned on for engine performance. When your oxygen sensors fail your car will run less smoothly, get worse mileage, and have worse emissions.

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Meet some of our expert GMC mechanics

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Excellent Rating


YourMechanic GMC Oxygen Sensor Replacement Service

Average Rating

5/5

Number of Reviews

22

Rating Summary
22
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Tomas

12 years of experience
226 reviews
Tomas
12 years of experience
GMC R3500 - Brake System Inspection - Newark, New Jersey
Pretty good. My inspection for my brakes went very quick, (a little too quick.) Not the most thorough inspection. However, Tomas came to the same conclusion that I had already suspected and the problem is now "dually" analyzed. 15 minutes, and I'm good. Tomas was quite knowledgeable and polite. He came with the proper tools and equipment to say the least and was promptly on time for the booked appointment. I would consider requesting Tomas again for similar work. Thanks again to Tomas and the team at YourMechanic for helping out.

Richard

10 years of experience
450 reviews
Richard
10 years of experience
GMC Yukon XL 1500 - Oxygen Sensor Replacement (Front/Upper/Upstream) - Washington, District of Columbia
Richard is the best! Always early and gets the job done right!! Very perfessional and respectful!!

William

33 years of experience
205 reviews
William
33 years of experience
GMC Yukon - Oxygen Sensor Replacement (Front/Upper/Upstream, Rear/Lower/Downstream) - Peoria, Arizona
Very knowledgeable Explains repair work Professional attitude Would highly recommend William

Robert

30 years of experience
576 reviews
Robert
30 years of experience
GMC Yukon XL 1500 - Oxygen Sensor Replacement (Front/Upper/Upstream) - Los Gatos, California
Robert was absolutely amazing. He went above and beyond to solve my issue and was an absolute pleasure to work with. I would recommend Robert to anyone, he is truly great!

Excellent Rating


YourMechanic GMC Oxygen Sensor Replacement Service

Average Rating

5/5

Number of Reviews

22

Rating Summary
22
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22
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Number of GMC Oxygen Sensor Replacement services completed
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