Guide to Replacing Rear Lateral Arms on a 2011-2017 Buick Regal
Eliminate rear-end clunks and unstable handling by understanding when to replace your Regal's lateral arms.
- A clunking noise from the rear over bumps is the most common symptom of a bad lateral arm.
- Always get a wheel alignment after replacing lateral arms to prevent tire damage and handling problems.
- Replace lateral arms in pairs (left and right) for balanced and safe handling.
- Check if your 2012-2013 Regal was part of the rear toe link recall, as it's a separate but related suspension issue.
Is Your Regal Making Clunking Noises?
The most common sign of a failing lateral arm is a clunking, popping, or knocking sound coming from the rear of the car. You'll likely hear this most when driving over bumps, potholes, or even road seams. This noise is caused by worn-out rubber bushings, which allow for metal-on-metal contact within the suspension. Other symptoms include a loose or wandering feeling in the steering, where the car feels unstable or pulls to one side, and uneven or premature wear on the inside or outside edges of the rear tires.
Important Note on a Related Recall
General Motors issued a significant safety recall for the rear toe links on many 2012-2013 Buick Regal models, especially in states where road salt is used. These toe links could rust and break, potentially causing a loss of vehicle control. It is very important to understand that lateral arms are different from toe links. However, if you are experiencing rear suspension issues on a 2012-2013 model, you should have a dealer check if the recall work (GM recall number N212346640 🎬 Watch: How to install and set upgraded rear toe links.) was performed. This issue highlights the suspension's vulnerability to corrosion on this platform.
Choosing the Right Aftermarket Lateral Arm
When replacing lateral arms, you don't always need to buy expensive OEM parts. Aftermarket brands offer a good balance of quality and cost. For your Regal, you will likely encounter Dorman and Mevotech.
- Dorman: Dorman is a well-known brand that provides a wide variety of affordable replacement parts. Their lateral arms are a cost-effective, standard replacement suitable for daily driving. They are often designed for easy, direct-fit installation, making them a popular choice for DIY repairs. While they offer decent performance, some user reviews suggest their longevity may not match more premium brands.
- Mevotech: Mevotech is generally considered a step up, focusing on creating durable suspension parts that often meet or exceed original designs. They are known for good quality and durability, and many mechanics trust them for a reliable fit and long-term performance. If you prioritize longevity and robust performance, Mevotech is a strong choice, often balancing quality and price effectively.
Pro Tip: Suspension parts wear out at similar rates. It is highly recommended to replace lateral arms in pairs (both left and right sides) to ensure balanced handling and predictable performance. You will also need a four-wheel alignment immediately after the replacement to prevent rapid tire wear.
Cost to Replace Buick Regal Lateral Arms
| Part Type | Estimated Cost |
|---|---|
| New OEM | $110 - $215 per arm |
| New Aftermarket (Dorman, Mevotech) | $61 - $109 per arm |
| Shop Labor | $100 - $200 |
Frequently Asked Questions (FAQ)
What is the difference between a lateral arm and a toe link?
They are both links in the rear suspension, but they control different movements. A lateral arm controls side-to-side wheel movement. A toe link controls the toe angle (whether the front of the tire points inward or outward). The toe link was the subject of a major recall on 2012-2013 Regals.
Can I just replace the bushings instead of the whole arm?
While bushings are available separately, they require a hydraulic press to be removed and installed into the old arm. Replacing the entire lateral arm assembly 🎬 See this walkthrough for replacing the rear upper suspension arm. is much simpler and faster for most DIY mechanics and even many professional shops. The new arm comes with new bushings pre-installed.
Is a wheel alignment really necessary after replacing a lateral arm?
Yes, it is mandatory. Replacing any component that affects suspension geometry, like a lateral arm, will alter your vehicle's alignment. Skipping the alignment will cause poor handling, crooked steering wheel, and will destroy your tires in a very short time.
Could my clunking noise be something else?
Yes. While lateral arms are a common cause, other worn suspension parts can create similar noises. These include sway bar end links, shock absorbers, or other control arms in the multi-link system. A thorough inspection is the best way to pinpoint the exact source of the noise.
🎬 Watch: A technician diagnoses common rear suspension clunks and failures.Helpful Videos
Technical Specifications
OEM Part Numbers: 22924230 23216571 23349953 84708925 20900531 22927292 13219145
The 2011-2017 Buick Regal uses a multi-link rear suspension. There are multiple lateral arms (links) per side, often designated as upper, lower, forward, or rearward. They are typically made of stamped steel or aluminum and feature rubber bushings at each mounting point.
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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.
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