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ACDelco GM Original Equipment 20938121 Rear Wheel Speed Sensor

4.7 4.7 out of 5 stars 235 ratings

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Purchase options and add-ons

Brand ACDelco
Item Dimensions LxWxH 4.5 x 4.5 x 1.7 inches
Material Acrylonitrile Butadiene Styrene
Item Weight 0.13 Pounds
Style Modern

About this item

  • Restores ABS function and performance caused by failed wheel speed sensor
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured with GM Original Equipment specification for fit, form, and function
  • Chevy: Silverado 1500 2007-2013; GMC: Sierra 1500 2007-2013
  • This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
  • Please visit your local GM Dealership if you do not have access to GM Service Information
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From the manufacturer

Certainty Starts Here

THREE TIERS OF A PREMIUM PORTFOLIO

GM OE

ACDelco Gold

ACDelco Silver

GM ORIGINAL EQUIPMENT

GM Genuine Parts and ACDelco Original Equipment are the true OE parts installed during production or validated by General Motors for GM vehicles. These maintenance, repair, powertrain and collision components are designed and engineered to meet rigorous standards set by General Motors.

GOLD

ACDelco Gold parts are the high-quality alternative to OE parts. These parts are manufactured to meet expectations for fit, form and function, making them a smart choice for General Motors vehicles and many makes and models, including special applications.

SILVER

ACDelco Silver parts are high-quality, high-value options for General Motors vehicles, as well as for most makes and models.

Our History

OUR HISTORY – OUR ROOTS EMPOWER US

ACDelco has been at the forefront of automotive innovation since the birth of GM in 1908. Since then, we’ve helped a woman fly around the world and a man traverse the surface of the moon.

However, our history isn’t half as promising as our future. We continue forward with GM Genuine Parts by our side. From the assembly line to the finish line, we’re building innovation and improvement on a foundation of GM Original Equipment.

GM Genuine Parts and ACDelco are proud to work together as the only source for true General Motors Original Equipment and aftermarket parts – past, present and future.

Product Description

ACDelco GM Original Equipment ABS Wheel Speed Sensors are located at each wheel, monitoring the rotation of each wheel, and are GM-recommended replacements for your vehicle's original components. The sensor provides this speed information to the antilock brake control module for the antilock braking function. These sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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ACDelco GM Original Equipment 20938121 Rear Wheel Speed Sensor


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What's in the box

  • Wheel Speed Sensor
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    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Price-10% $43.82
    Typical:$48.71
    -42% $23.22
    List:$39.73
    $24.60$66.79$19.95-6% $16.80
    Typical:$17.85
    Delivery
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it as soon as Wednesday, Apr 3
    Get it Apr 3 - 4
    Get it as soon as Wednesday, Apr 3
    Customer Ratings
    Value for money
    4.9
    4.9
    4.4
    4.2
    Easy to install
    4.7
    4.5
    4.3
    4.0
    Sold By
    Amazon.com
    Amazon.com
    Amazon.com
    Amazon.com
    DB AUTOMOTIVE
    Amazon.com
    specific uses
    Speed,Wheel Speed
    Speed,Wheel Speed
    Speed,Wheel Speed
    Speed,Wheel Speed
    Speed,Wheel Speed
    Speed,Wheel Speed
    material
    Acrylonitrile Butadiene Styrene
    Acrylonitrile Butadiene Styrene
    Acrylonitrile Butadiene Styrene
    Acrylonitrile Butadiene Styrene
    Acrylonitrile Butadiene Styrene
    Acrylonitrile Butadiene Styrene
    mounting type
    Flange Mount
    Flange Mount
    Flange Mount
    Flange Mount
    Flange Mount
    Flange Mount
    style
    Modern
    Modern
    Modern
    Modern
    Modern
    Modern
    weight
    0.13 pounds
    0.6 pounds
    0.04 kilograms
    0.1 pounds

    Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    235 global ratings

    Customers say

    Customers like the ease of installation, fit, value, and performance of the electronic sensor. For example, they mention it's easy to replace, works perfectly as expected, and the price is great. That said, opinions are mixed on the quality.

    AI-generated from the text of customer reviews

    13 customers mention13 positive0 negative

    Customers find the installation of the electronic sensor to be relatively easy. They mention that it's an exact factory match, and that it works like the original part. Some say that it can be easily swapped out by a DIYer with a floor jack and a Jackstand.

    "Easy install" Read more

    "OEM Part. Got rid of my Traction control and ABS lights. Fairly easy to replace for a DIY'er with Floor jack and a Jackstand. Price was Great." Read more

    "Needed for 2009 Chevy Silverado LTZ. Perfect fit, relatively easy and no codes or issues after installing." Read more

    "...He said that it was easy to install. It was priced right and along with free shipping --- it's great." Read more

    10 customers mention10 positive0 negative

    Customers are satisfied with the fit of the electronic sensor. They mention that it fits perfectly.

    "Needed for 2009 Chevy Silverado LTZ. Perfect fit, relatively easy and no codes or issues after installing." Read more

    "Part was a perfect fit for my 2008 GMC and repaired the problem I had with the ABS light and the traction control warning indicator...." Read more

    "Perfect fit. R/rear ABS sensor with harnessTOOK.CARE OF MY ABS light and Traction Control issue." Read more

    "Fits great and OEM part" Read more

    8 customers mention8 positive0 negative

    Customers appreciate the value of the electronic sensor. They say that it saves them a ton of money.

    "...Price was Great." Read more

    "...He said that it was easy to install. It was priced right and along with free shipping --- it's great." Read more

    "...Good value." Read more

    "Reasonable price for an OE partWorks as intended" Read more

    6 customers mention6 positive0 negative

    Customers are satisfied with the performance of the electronic sensor. They mention that it works perfectly as expected and is not too bad of an install.

    "Worked like a charm." Read more

    "Not too bad of an install and works perfect on the 2008 Silverado 1500." Read more

    "Easy to swap out, works like orginal part." Read more

    "This part fit perfectly and worked just as well. I would advise just removing your old fasteners with the old part...." Read more

    13 customers mention8 positive5 negative

    Customers are mixed about the quality of the electronic sensor. Some mention it's a good product with excellent quality, while others say that it broke or was defective.

    "Perfect oem match. Did need to tap in with small hammer. Don't forget the high-temp wheel bearing grease on sensor housing...." Read more

    "...Code C0045 "Left Rear Wheel Speed Sensor Circuit Fault." Fifteen minutes to install and all problems fixed." Read more

    "Excellent quality of this ABS speed sensor, easy to install." Read more

    "oem part great quality. replaced in 5min, started truck and traction control & stability control light was gone." Read more

    Top reviews from the United States

    Reviewed in the United States on September 28, 2022
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    One person found this helpful
    Report
    Reviewed in the United States on January 10, 2023
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    Top reviews from other countries

    Translate all reviews to English
    D
    5.0 out of 5 stars Worked Great
    Reviewed in Canada on October 27, 2023
    Xxx
    5.0 out of 5 stars Abs
    Reviewed in Mexico on December 5, 2019
    H.E
    5.0 out of 5 stars Perfect
    Reviewed in Canada on December 16, 2022
    Dwaine
    5.0 out of 5 stars Original Equipment
    Reviewed in Canada on September 9, 2022
    Chris Brinklow
    5.0 out of 5 stars They fit
    Reviewed in Canada on May 14, 2022