Brand | ACDelco |
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Item Dimensions LxWxH | 4.5 x 4.5 x 1.7 inches |
Material | Acrylonitrile Butadiene Styrene |
Item Weight | 0.13 Pounds |
Style | Modern |
Mounting Type | Flange Mount |
Specific Uses For Product | Speed,Wheel Speed |
Manufacturer | ACDelco |
Model | Wheel Speed Sensor |
Item Weight | 2.08 ounces |
Product Dimensions | 4.5 x 4.5 x 1.7 inches |
Country of Origin | Mexico |
Item model number | 20938121 |
Exterior | Machined |
Manufacturer Part Number | 20938121 |
OEM Part Number | 20938121 |
ACDelco GM Original Equipment 20938121 Rear Wheel Speed Sensor
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
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
THREE TIERS OF A PREMIUM PORTFOLIO
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GM ORIGINAL EQUIPMENTGM 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. |
GOLDACDelco 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. |
SILVERACDelco Silver parts are high-quality, high-value options for General Motors vehicles, as well as for most makes and models. |
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
ASIN | B0049HMP6C |
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Customer Reviews |
4.7 out of 5 stars |
Best Sellers Rank | #578,064 in Automotive (See Top 100 in Automotive) #1,513 in Automotive Replacement Anti-Lock Brake Speed Sensors |
Date First Available | October 27, 2010 |
Warranty & Support
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This Item ACDelco GM Original Equipment 20938121 Rear Wheel Speed Sensor | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | -10% $43.82$43.82 Typical: $48.71 | -42% $23.22$23.22 List: $39.73 | $24.60$24.60 | $66.79$66.79 | $19.95$19.95 | -6% $16.80$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 |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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Top reviews
Top reviews from the United States
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1. Service Traction Control
2. Service Stabilitrak
3. Service Trailer Brake System
I hooked my truck up to a Snap-on diagnostic tool. Code C0045 "Left Rear Wheel Speed Sensor Circuit Fault." Fifteen minutes to install and all problems fixed.