A Guide to the 2009-2018 Chevrolet Traverse ABS Wheel Speed Sensor
Fix your ABS and StabiliTrak warning lights by choosing the right replacement sensor for your Traverse.
- A bad ABS sensor is the most common cause of the ABS, StabiliTrak, and Traction Control lights on a 2009-2018 Traverse.
- You must use an OBD2 scanner that can read ABS codes to identify which wheel sensor has failed; guessing is expensive.
- The sensor itself is easy to replace (one bolt), but it often seizes in the hub and can break, making the job much harder.
- Before replacing the sensor, inspect the wheel bearing for damage or debris on the magnetic ring, as this can cause the same symptoms.
Understanding ABS Sensor Failure on Your Traverse
If you own a 2009-2018 Chevrolet Traverse, seeing the ABS, StabiliTrak, or traction control lights on your dash is a common issue. These warnings are often the first sign of a failing ABS wheel speed sensor. This sensor lives in a harsh environment at the wheel hub, exposed to water, dirt, and road salt, which can cause it to fail or its wiring to break. Sometimes, the problem isn't the sensor itself but the magnetic ring on the wheel bearing that it reads; if this ring is damaged or covered in metallic debris, it can cause the same symptoms.
Symptoms of a Bad ABS Wheel Speed Sensor
When a sensor fails, the vehicle's computer loses important data. This forces it to shut down safety systems that rely on that data. Look out for these common signs:
- ABS warning light is on.
- "Service StabiliTrak" or "Service Traction Control" message appears.
- Brakes feel like they are pulsing or engaging the ABS at low speeds.
- In some cases, the transmission may shift harshly or the speedometer may act erratically.
Known Issues for 2009-2018 Traverse
General Motors has issued technical service bulletins (TSBs) related to wheel speed sensor issues. For example, TSB PIC5428G and 17-NA-047 address problems where metallic debris sticks to the magnetic encoder ring on the wheel bearing, causing false sensor readings. This can lead to ABS activation at low speeds or warning lights. The fix often involves cleaning the bearing's magnetic ring, but if the sensor or bearing is damaged, replacement is necessary. While there are no specific recalls for the ABS sensor on the 2009-2018 Traverse, related GM models have been recalled for similar issues that could cause unexpected braking.
Choosing the Right Aftermarket ABS Sensor
When it comes to safety-critical sensors, quality matters. You don't have to buy the expensive OEM part from the dealer, but choosing a reputable aftermarket brand is important. Here’s a breakdown of available brands:
Tier 1: OEM-Quality Brands
These brands are often original equipment suppliers to automakers and are known for their high quality and reliability. For a critical part like an ABS sensor, they are a top choice.
- ACDelco: As GM's own parts brand, ACDelco is the closest you can get to the original part. It is a trusted choice for a perfect fit and long-term reliability.
- Delphi: A major OEM supplier for many car manufacturers, Delphi sensors are engineered to meet or exceed factory specifications.
Tier 2: Trusted Aftermarket Brands
These brands offer a great balance of quality and value. They are well-known in the repair industry and produce reliable parts that are a good alternative to OEM.
- NGK/NTK: While famous for spark plugs, NGK's sensor line (NTK) is highly regarded for its quality and precision.
- Standard Ignition (Standard Motor Products): A long-standing brand in the aftermarket, they produce a wide range of reliable electronic components, including ABS sensors.
- Dorman: Dorman is known for providing affordable and widely available parts. They often re-engineer parts to fix common failure points, though quality can sometimes be inconsistent compared to Tier 1 brands.
- Walker Products: A reputable manufacturer of fuel delivery and engine management components, including sensors.
Tier 3: Value-Oriented Brands
These brands provide a budget-friendly option. They can be a good choice if cost is the primary concern, but may not offer the same longevity or rigorous quality control as higher-tier brands.
- Holstein: Offers a cost-effective alternative for sensors and other electronic parts.
- Skyward, True Tech: These are typically entry-level brands that focus on affordability.
Pro Tip: Check the Wheel Bearing First
Before replacing the sensor, inspect the wheel bearing hub. A failing wheel bearing can cause excessive play, damaging the new sensor. Also, the magnetic encoder ring on the bearing can get damaged or covered in debris, which a new sensor can't fix. Sometimes, replacing the entire wheel hub assembly (which often includes a new sensor) is the best long-term repair.
Estimated Replacement Costs
The cost can vary based on the brand you choose and whether you do the work yourself. The sensor itself is relatively inexpensive.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket ABS Sensor | $21 - $73 |
| Shop Labor | $100 - $150 |
| Total Professional Replacement | $121 - $223 |
Frequently Asked Questions (FAQ)
Which wheel sensor is bad?
You can't know for sure without the right tool. The warning lights don't tell you which sensor has failed. You need an OBD2 scanner that can read ABS codes. These codes, such as C0040 (front right) or C0045 (rear left), will point you directly to the faulty wheel. Many auto parts stores will scan these codes for free.
Can I drive my Traverse with a bad ABS sensor?
Yes, but with caution. Your normal brakes will still work, but the ABS, traction control, and StabiliTrak systems will be disabled. This means your vehicle won't have the computerized assistance to prevent skidding in an emergency stop or on slippery roads. It's recommended to get it fixed as soon as possible for safety.
Is replacing an ABS sensor a DIY job?
Yes, for many people with basic tools, it is. The sensor is usually held by a single 10mm bolt. The main challenge is that the old sensor can get seized in the wheel hub and break during removal. If it breaks, you may need to carefully drill or punch out the remaining plastic pieces without damaging the wheel bearing below. You will also need to route the new wire and secure it with the included clips.
Do I need to replace all four sensors at once?
No. You only need to replace the sensor that has failed. An ABS-capable scan tool will tell you which specific sensor is causing the problem, so you don't have to guess or replace parts unnecessarily.
Why did the lights come back on after replacing the sensor?
There are a few possibilities. The underlying problem could be a damaged magnetic ring on the wheel bearing, not the sensor itself. The new sensor might not be seated properly, creating too large an air gap. Or, the wiring harness between the sensor and the computer could be damaged. Lastly, using a very cheap, poor-quality sensor can sometimes cause it to fail quickly or not work at all.
Helpful Videos
Technical Specifications
OEM Part Numbers: 22739727 22951116 20893434 84301906
The sensor is a two-wire magnetic hall-effect sensor that reads the rotation of a magnetic encoder ring integrated into the wheel bearing assembly. It is secured to the steering knuckle by a single 10mm bolt.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Chevrolet Traverse:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Understanding ABS Sensor Failure on Your Traverse
- Symptoms of a Bad ABS Wheel Speed Sensor
- Known Issues for 2009-2018 Traverse
- Choosing the Right Aftermarket ABS Sensor
- Tier 1: OEM-Quality Brands
- Tier 2: Trusted Aftermarket Brands
- Tier 3: Value-Oriented Brands
- Pro Tip: Check the Wheel Bearing First
- Estimated Replacement Costs
- Frequently Asked Questions (FAQ)
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