Chevrolet Trailblazer EXT Wheel Speed Sensor Replacement at your home or office.

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Wheel Speed Sensor Replacement Service

How much does a Wheel Speed Sensor Replacement cost?

On average, the cost for a Chevrolet Trailblazer EXT Wheel Speed Sensor Replacement is $175 with $80 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2005 Chevrolet Trailblazer EXTL6-4.2LService typeWheel Speed Sensor - Passenger Side Front ReplacementEstimate$312.39Shop/Dealer Price$371.74 - $527.29
2004 Chevrolet Trailblazer EXTV8-5.3LService typeWheel Speed Sensor - Passenger Side Front ReplacementEstimate$292.39Shop/Dealer Price$351.76 - $507.32
2003 Chevrolet Trailblazer EXTL6-4.2LService typeWheel Speed Sensor - Passenger Side Rear ReplacementEstimate$255.39Shop/Dealer Price$305.51 - $433.32
2003 Chevrolet Trailblazer EXTL6-4.2LService typeWheel Speed Sensor - Passenger Side Front ReplacementEstimate$292.39Shop/Dealer Price$351.74 - $507.28
2005 Chevrolet Trailblazer EXTV8-5.3LService typeWheel Speed Sensor - Driver Side Front ReplacementEstimate$292.39Shop/Dealer Price$351.77 - $507.35
2006 Chevrolet Trailblazer EXTL6-4.2LService typeWheel Speed Sensor - Driver Side Rear ReplacementEstimate$392.03Shop/Dealer Price$476.31 - $706.60
2005 Chevrolet Trailblazer EXTL6-4.2LService typeWheel Speed Sensor - Driver Side Rear ReplacementEstimate$260.39Shop/Dealer Price$310.37 - $438.08
2002 Chevrolet Trailblazer EXTL6-4.2LService typeWheel Speed Sensor - Driver Side Rear ReplacementEstimate$260.39Shop/Dealer Price$310.74 - $438.74
Show example Chevrolet Trailblazer EXT Wheel Speed Sensor Replacement prices

What is the Wheel Speed Sensor all about?

A wheel speed sensor, also called an "ABS sensor," is part of the Anti-lock Brake System (ABS). It is located on the tires (near the brake rotors for the front tires and in the rear end housing for the rear tires). The job of the wheel speed sensor is to constantly monitor and report the rotational speed of each tire to the ABS control module. ABS is a safety system that prevents your car from skidding or sliding when you apply the brakes. When the brake is applied, the ABS control module reads the speed data from the speed sensor and sends the correct pressure to each wheel to prevent any sliding/skidding (wheels locking up).

On cars that come with rotors in each tire, each tire will also have a speed sensor. On cars that have rear drums (instead of rotors), the tires will have one sensor in the rear and two sensors in the front. When one or more of these sensors are faulty, the ABS warning light will go on and the ABS will be disabled. You will still be able to slow down and stop your car, but the tires may slide when you apply brakes, esp. on slippery surfaces.

Keep in mind:

  • The TCS (Traction Control System) relies on the same wheel speed sensors as the ABS, so replacing the sensors can fix both systems.
  • Each wheel has at least one speed sensor, so it is possible that only one of the sensors needs replacing.
  • Sometimes sensors stop working because they are dirty. In this case, the mechanic will repair your sensor by cleaning it, rather than replacing it.

How it's done:

  • Scan the ABS system for codes.
  • Inspect entire brake system.
  • Inspect sensor and reluctor wheel.
  • Remove and replace the wheel speed sensor.
  • Check for proper operations.

Our recommendation:

During a brake service, the mechanic will make sure that the sensor is free of debris or grease that may prevent the sensor from functioning properly.

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

  • ABS warning light is on.
  • ABS system is not working.
  • Traction control warning light is on.

How important is this service?

Without wheel speed sensors, your ABS and TCS will not work. These systems rely on information from the wheel speed sensors; the sensors tell the ABS when to unlock the brakes to avoid sliding, and they tell the TCS when to distribute power to different wheels so that you stay in control of your vehicle. Without wheel speed sensors, the ABS and TCS do not have the information they need, and so they shut off, leaving your car without two primary safety features.

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Maxwell

18 years of experience
390 reviews
Maxwell
18 years of experience
Chevrolet Trailblazer EXT L6-4.2L - Serpentine/Drive Belt - Spring, Texas
Did a great job, Highly recommend!.

David

25 years of experience
62 reviews
David
25 years of experience
Chevrolet Trailblazer EXT L6-4.2L - Car is shaking or vibrating - Tampa, Florida
David was amazing. Showed up on time and went above and beyond. Very professional

Robert

20 years of experience
1092 reviews
Robert
20 years of experience
Chevrolet Trailblazer EXT L6-4.2L - Heater Control Valve - Denver, Colorado
Robert shows up on time and gets the job done!

Richard

11 years of experience
265 reviews
Richard
11 years of experience
Chevrolet Trailblazer EXT L6-4.2L - Inspection / Diagnostics - Murfreesboro, Tennessee
Surprisingly impressed! First experience with YourMechanic and Richard and could not be happier with the service or the cost!

Excellent Rating

(86)

Rating Summary
81
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1
2
81
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1
2
Number of Chevrolet Trailblazer EXT services completed
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Recent articles & questions

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Symptoms of a Bad or Failing Speed Sensor
Common signs include harsh or improper shifting, cruise control not working, and the Check Engine Light coming on.
How to Replace an Anti-Lock Brake Fluid Level Sensor on Most Modern Cars
The anti-lock brake (ABS) system has a fluid level sensor that fails when the warning light comes on or if there is low fluid in the reservoir.

ABS ON after 18MPH

The light comes on after 18mph since this is the speed where the ABS will start to work on your car. The light is coming on due to one or more wheel speed sensors (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-wheel-speed-sensor) are not sending a signal...

two front wheel speed sensor died

As long as the light is out and does not come back on, then the system is working as it should. The problem with the sensors may be an intermittent problem in the sensors or the wires going to the...

My car is not starting; what should I replace?

Your engine's computer gets crank signals from the crankshaft (https://www.yourmechanic.com/services/crankshaft-position-sensor-replacement) and camshaft (https://www.yourmechanic.com/services/camshaft-position-sensor-replacement) sensors and then uses these signals to fire the coils. To see if the sensors are sending these signals to the computer, you can scan the computer...

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