Chevrolet Impala Wheel Speed Sensor Guide (2013-2020)
Fix your Impala's faulty speedometer and ABS warnings by understanding and choosing the right replacement wheel speed sensor.
- The 'Vehicle Speed Sensor' on a 2014-2020 Impala is actually one of four ABS Wheel Speed Sensors.
- ABS/Stabilitrak lights, a faulty speedometer, and harsh shifting are the most common symptoms of failure.
- Before replacing the sensor, inspect the wiring harness and the wheel hub's magnetic ring for damage, as they are common failure points.
- Use a scan tool that can read ABS codes to identify which specific wheel sensor has failed before buying parts.
Is it a Vehicle Speed Sensor or a Wheel Speed Sensor?
For the 10th generation Chevrolet Impala (2014-2020), the function of a traditional Vehicle Speed Sensor (VSS) is handled by the individual ABS Wheel Speed Sensors (WSS). When you see an error code like P0501 for the VSS, the problem is almost always with one of the four wheel speed sensors or its wiring. The 2013 model year can be confusing as it includes the older 9th generation "Impala Limited," which may have a different transmission-mounted sensor setup. This guide focuses on the modern system used from 2014-2020, which uses wheel-mounted sensors.
Symptoms of a Failing Wheel Speed Sensor
A bad wheel speed sensor sends incorrect data, or no data at all, to the car's computer. This can cause several noticeable problems:
- ABS and Stabilitrak/Traction Control Lights: This is the most common symptom. The dashboard will light up with warnings because these safety systems are automatically disabled. 🎬 Watch: How to fix ABS and Stabilitrak warning lights
- Erratic or Non-Working Speedometer: Your speedometer might jump around randomly or just sit at 0 MPH.
- Harsh or Improper Shifting: The transmission needs accurate speed data to shift gears smoothly. A bad sensor can lead to jerky, delayed, or hard shifts.
- Cruise Control Won't Engage: The system will not activate if it can't get a reliable speed reading.
- Check Engine Light: A fault in the speed sensor system can trigger the Check Engine Light, often with codes like P0501, P0502, or P0503. You may also see ABS-specific codes like C0035.
Pro Tip: Check More Than Just the Sensor
Before buying a new sensor, inspect the wiring harness that connects to it. This harness is exposed to the elements and can become corroded or damaged, which is a very common issue. Also, inspect the magnetic encoder ring on the wheel hub itself. If it's cracked, damaged, or covered in metallic debris, it can cause the sensor to give a bad reading. Sometimes, cleaning the hub or replacing a damaged wire pigtail is all that's needed.
🎬 Watch this guide to fixing C0035 and C0040 codesChoosing the Right Aftermarket Sensor
Not all aftermarket parts are created equal. For a critical part like a wheel speed sensor, quality matters. Here’s a breakdown of the available brands:
- Top Tier (OEM Equivalent): Delphi is a well-regarded brand and was an original equipment manufacturer for many GM parts. Choosing Delphi is the closest you can get to buying the part from the dealer without the high price tag. It is the recommended choice for reliability.
- Mid Tier (Reputable Aftermarket): Standard Ignition (Standard Motor Products) is a long-standing aftermarket company with a solid reputation. Their parts are a reliable alternative to OEM and are trusted by many repair shops.
- Economy Tier (Budget-Friendly): Holstein offers a more affordable option. While functional, they are generally considered a standard replacement part without the same long-term track record or OEM association as Delphi.
Cost of Replacing a Wheel Speed Sensor on a 2013-2020 Impala
| Part/Service | Estimated Cost |
|---|---|
| New OEM Sensor (Dealer) | $55 - $70 |
| New Aftermarket Sensor | $33 - $53 |
| Shop Labor | $95 - $220 |
| Total Professional Replacement (Aftermarket Part) | $128 - $273 |
No Recalls Found
As of early 2026, there are no specific NHTSA safety recalls for the wheel speed sensors on the 2013-2020 Chevrolet Impala. Always check for the most current information using your vehicle's VIN.
Frequently Asked Questions
Where is the wheel speed sensor located?
There is one sensor at each wheel. It is mounted on the wheel hub/knuckle assembly and reads the rotation of the wheel bearing. You must remove the wheel to access it.
Can I replace a wheel speed sensor myself?
Yes, this is a DIY-friendly job for most people with basic tools. The sensor is typically held by one bolt, but the wiring is often secured by several clips along the suspension that must be unfastened. The hardest part can be removing the old sensor if it is rusted into the hub.
Do I need to replace all four sensors at once?
No. You only need to replace the sensor that has failed. A proper diagnostic scan tool can read ABS codes and live data to tell you exactly which wheel sensor is malfunctioning (e.g., "C0035 Left Front Wheel Speed Sensor Circuit"). 🎬 See this C0035 diagnosis and repair walkthrough Replacing only the failed sensor will save you money.
What happens if I don't replace a bad wheel speed sensor?
You can continue to drive the car, but you will not have the protection of your Anti-lock Brakes (ABS) or Stabilitrak/traction control systems. This can be dangerous in emergency braking or slippery conditions. You will also have to deal with an incorrect speedometer and poor transmission shifting.
Helpful Videos
Technical Specifications
OEM Part Numbers: 23483145 22831244
This part is an ABS Wheel Speed Sensor. Four are used on the vehicle, one at each wheel hub. The front sensors are the same, and the rear sensors are the same.
We Have This Part in Stock
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 Impala:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is it a Vehicle Speed Sensor or a Wheel Speed Sensor?
- Symptoms of a Failing Wheel Speed Sensor
- Pro Tip: Check More Than Just the Sensor
- Choosing the Right Aftermarket Sensor
- Cost of Replacing a Wheel Speed Sensor on a 2013-2020 Impala
- No Recalls Found
- Frequently Asked Questions
- 🎟️ Get 5% Off