2015-2020 Chevrolet Impala Front Suspension Control Arm Bushing and Assembly Guide
Address front-end clunks and wandering steering on your Impala by understanding the control arm bushings.
- It is strongly recommended to replace the entire control arm assembly, not just the bushing, as it is easier and more reliable.
- Common failure symptoms include clunking noises over bumps, wandering steering, and uneven tire wear.
- Delphi is considered an OEM-quality brand, while Dorman is a viable budget-friendly option.
- A four-wheel alignment is mandatory after replacing the control arms to prevent tire damage and ensure safe handling.
Is Your Impala Making Noise Over Bumps?
If you're hearing a clunking or knocking sound from the front of your Impala, especially when going over bumps or uneven roads, a worn control arm bushing is a likely culprit. Because the bushing is made of a flexible material, it wears out over time from constant movement and exposure to the elements. When the rubber degrades, it allows for excess movement, causing metal-on-metal contact between the control arm and the frame.
Symptoms of a Bad Control Arm Bushing
- Clunking Noises: Sounds from the front suspension when driving over bumps, potholes, or even during braking.
- Unstable Steering: The steering may feel loose, vague, or you might notice the car pulling to one side, requiring constant correction.
- Vibrations: A worn bushing can no longer effectively dampen road vibrations, which can be felt through the steering wheel.
- Uneven Tire Wear: When the bushing fails, it can throw off the wheel alignment, causing the inside or outside edge of your tires to wear down prematurely.
Known Issues & Recalls
Searches of the NHTSA database and public service bulletins show no specific recalls or widespread known issues for suspension control arm bushings on the 2015-2020 Chevrolet Impala. Failures are typically the result of normal wear and tear based on mileage and road conditions.
Choosing the Right Aftermarket Part
When a control arm bushing fails, you have two choices: replace just the bushing or replace the entire control arm assembly (which includes new bushings and a new ball joint). For the 2015-2020 Impala, replacing the entire assembly is the highly recommended approach.
Pro Tip: Replace the Whole Arm, Not Just the Bushing
Replacing only the bushing requires a special hydraulic press to remove the old one and install the new one into the control arm. This is a difficult and time-consuming job. In contrast, replacing the entire control arm is a much more straightforward bolt-off, bolt-on procedure that most DIY mechanics can handle. It's often more cost-effective in terms of labor and guarantees all related components (bushings and ball joint) are new.
Aftermarket Brand Options: Delphi vs. Dorman
When shopping for a new control arm assembly, you'll likely encounter these two brands:
- Delphi: Delphi is widely regarded as an OEM-quality brand. The company was once a part of General Motors and has a long history of supplying parts directly to the factory. For owners looking for a fit and performance level that is as close to the original part as possible, Delphi is a trusted choice.
- Dorman: Dorman offers a more budget-friendly alternative. While some users have mixed opinions on quality, Dorman parts are engineered to fit and function as a direct replacement for the factory component. For a daily-driven vehicle where cost is a primary factor, Dorman can be a suitable and cost-effective solution.
Estimated Replacement Costs
Costs can vary based on your location and whether you do the work yourself or hire a professional. An alignment is required after the job is done.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Control Arm Assembly | $59 - $175 (per side) |
| Shop Labor (Control Arm Assembly Replacement) | $140 - $250 (per side) |
| Wheel Alignment | $80 - $150 |
Frequently Asked Questions
Can I drive with a bad control arm bushing?
It is not recommended. While the car may be drivable for a short period, a failing bushing can lead to unpredictable steering and excessive tire wear. A complete failure could cause a loss of steering control, which is extremely dangerous.
Do I need to replace both sides at the same time?
It is highly recommended. If the bushing on one side has failed due to age and mileage, the other side is likely not far behind. Replacing them in pairs ensures balanced handling and saves you from doing the same job twice.
Why is a wheel alignment necessary after replacement?
Replacing the control arm directly affects the suspension geometry. Without a proper alignment, your Impala will likely pull to one side, and you will experience rapid and uneven tire wear, costing you more money in the long run.
Can I replace just the bushing myself?
This is not recommended for a DIYer. The job requires a hydraulic press and specialized tools to press the old bushing out and the new one in without damaging the control arm. Swapping the entire control arm assembly is a much more feasible DIY job.
Technical Specifications
This article focuses on the front lower control arm bushings. The 2015-2020 Impala uses a MacPherson strut front suspension. The lower control arm has two bushings: a forward and a rearward bushing. The entire control arm assembly is the recommended replacement part.
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:
- 🛍️ Shop This Part
- Is Your Impala Making Noise Over Bumps?
- Symptoms of a Bad Control Arm Bushing
- Known Issues & Recalls
- Choosing the Right Aftermarket Part
- Pro Tip: Replace the Whole Arm, Not Just the Bushing
- Aftermarket Brand Options: Delphi vs. Dorman
- Estimated Replacement Costs
- Frequently Asked Questions
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