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Chevrolet Trailblazer Oxygen Sensor Replacement

As is always the case, the cost of the repair depends on the make, model, and year of your car.

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$90.58 $1010.5
Average Shop Price $428
RepairSmith Price $243
Average Shop Price RepairSmith Price $ Tell us your vehicle to get a guaranteed price for your brakes from RepairSmith.

This range covers an average oxygen sensor replacement. Tell us your car to get a guaranteed price from RepairSmith.

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Chevrolet Trailblazer Oxygen Sensor Replacement

RepairSmith offers upfront and competitive pricing. The average cost for Chevrolet Trailblazer Oxygen Sensor Replacement is $143. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you.

Car
Location
Quoted on
Price
2021 Chevrolet Trailblazer
1.2L L3 Turbo LT • 8,000 miles
Seal Beach CA 90740
Nov 9, 2020
$104 - $127
2009 Chevrolet Trailblazer
4.2L L6 LT • 98,000 miles
Oakland CA 94661
Nov 3, 2020
$99 - $121
2006 Chevrolet Trailblazer
5.3L V8 LS • 160,000 miles
Bakersfield CA 93309
Oct 24, 2020
$157 - $191
2003 Chevrolet Trailblazer
4.2L L6 North Face • 69,000 miles
San Marino CA 91108
Oct 24, 2020
$97 - $119
2021 Chevrolet Trailblazer
1.2L L3 Turbo L • 6,000 miles
Santa Ana CA 92701
Oct 22, 2020
$98 - $120
2008 Chevrolet Trailblazer
5.3L V8 Base • 77,000 miles
Bellflower CA 90706
Oct 18, 2020
$134 - $164
2002 Chevrolet Trailblazer
4.2L L6 LT • 22,000 miles
San Francisco CA 94102
Oct 14, 2020
$158 - $194
2004 Chevrolet Trailblazer
4.2L L6 North Face • 258,000 miles
Mesa AZ 85213
Jun 22, 2020
$194 - $237
2006 Chevrolet Trailblazer
4.2L L6 • 191,000 miles
San Diego CA 92130
Jun 15, 2020
$105 - $129
2006 Chevrolet Trailblazer
4.2L L6 • 191,000 miles
San Diego CA 92130
Jun 15, 2020
$137 - $167
Last Updated:
Dec 15, 2020 8:45 PM
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What is an Oxygen Sensor?

Would you be shocked if I said it’s a sensor to measure oxygen? Okay, but it’s a bit more than that. Cars have both upstream and downstream sensors (also known as O2 sensors). Upstream oxygen sensors are placed in front of the catalytic converter, and measure the amount of oxygen in the exhaust. The car’s computer then uses that data to determine the proper air to fuel ratio.  Downstream oxygen sensors are located behind the catalytic converter, and measure the efficiency of the converter.

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Signs of a faulty Oxygen Sensor

Poor performance

No one likes poor performance. That includes you, and it certainly includes your car. Faulty O2 sensors will feed misinformation to your car’s computer. The computer will then alter the engine in a way that leads to less power, some hesitation and jerkiness, and running rough. Which means you’ll be embarrassed the next time you try to show off at a green light.

Check engine light

Oh, the check engine warning light. That light that you pretend isn’t there when it lights up. How has that worked out for you? Try as you might, ignoring a check engine light won’t make it go away. And oxygen sensor failure is a common cause of the light illuminating.

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How urgent is an Oxygen Sensor replacement?

You’re not really in any danger driving around with a busted O2 sensor. Your car will still be safe to drive. But the performance won’t be ideal, and you may fail an emissions test. You don’t need to drop everything and run straight to a repair, but get around to it when you can.

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