Guide to 1971-1991 Buick LeSabre Suspension Control Arm Bushings
Restore your classic Buick's smooth ride and confident handling by understanding and choosing the right control arm bushings.
- Worn bushings cause clunking noises, steering wander, and uneven tire wear.
- Choose rubber bushings to maintain the LeSabre's classic smooth ride; choose polyurethane for durability and improved handling.
- Replacing the entire control arm (with new bushings and ball joint) can save on labor costs compared to pressing in new bushings alone.
- A professional wheel alignment is necessary after replacing control arm bushings to ensure safety and prevent tire damage.
Understanding Your LeSabre's Suspension Design
The 1971-1991 Buick LeSabre models covered here primarily use the classic GM B-body platform, known for its robust front and rear suspension. This design features upper and lower control arms at the front, which hold the wheel assembly and allow it to pivot for steering and move with the road. These arms have bushings at the frame connection points. It's important to note that while most LeSabre models from 1971-1985 were rear-wheel drive B-bodies, the sedan and coupe shifted to a front-wheel drive H-body platform from 1986-1991, which uses a different suspension setup. This guide focuses on the more common RWD B-body models.
Signs of Worn Control Arm Bushings
When control arm bushings wear out, they can no longer hold the suspension components tightly, leading to several noticeable problems. Because the lower 🎬 Watch this video to see common symptoms and replacement costs. control arm bushings often support the vehicle's weight, they are especially prone to wear.
- Clunking or Banging Noises: A common symptom is a clunking sound from the front end, especially when driving over bumps, braking, or making sharp turns. This is caused by the loose control arm moving and making contact with the frame.
- Steering Wander: Your LeSabre might feel unstable or pull to one side, requiring constant steering corrections to keep it straight. This happens because worn bushings allow for unwanted movement in the suspension, affecting alignment.
- Excessive Vibrations: You may feel vibrations through the steering wheel, which can change with speed. Worn bushings can't absorb road harshness effectively, transferring it into the car's cabin.
- Uneven Tire Wear: Inspect your tires for wear on the inner or outer edges. Bad bushings lead to improper alignment that can't be corrected until the bushings are replaced, causing tires to wear down unevenly.
Choosing the Right Aftermarket Bushings
Since OEM parts for these classic vehicles are often discontinued, the aftermarket is your primary source. The brands available offer different levels of quality and performance.
Brand Tiers for Your Buick LeSabre
Rubber vs. Polyurethane
You'll face a choice between standard rubber and performance-oriented polyurethane bushings. Rubber offers a quieter, smoother ride, similar to the original factory feel, as it's better at absorbing vibrations. Polyurethane is a harder, more durable material that provides better handling, improved road feel, and a longer lifespan. However, this comes at the cost of a firmer, potentially noisier ride. For a classic LeSabre, most owners prefer rubber to maintain its characteristic smooth ride, but polyurethane is a great option for performance-oriented builds.
- Premium Brands (Moog, Nolathane, ACDelco Professional): Moog is well-known for its "Problem Solver" line, which often features design improvements over the original parts, though some users report inconsistent quality in recent years. Nolathane specializes in high-quality polyurethane bushings for improved performance. ACDelco Professional parts are GM's top-tier aftermarket line, designed to meet or exceed original specifications.
- Standard OEM-Quality Brands (Delphi, QuickSteer): Delphi is a respected OEM supplier, and their aftermarket parts are known for reliable, OE-like performance. QuickSteer is a reputable value brand that provides dependable standard replacements.
- Economy Brands (Dorman, Mevotech): These brands offer a wide catalog at budget-friendly prices. Dorman is known for making hard-to-find parts, but quality can be inconsistent. Mevotech offers several lines, with their "TTX" line being a more durable option compared to their standard grade. These can be a viable option for a limited budget, but may not have the longevity of premium brands. 🎬 Compare Mevotech and Moog to find the best suspension parts.
Estimated Costs for Replacement
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Bushings (per set) | $11.33 - $73.32 |
| Shop Labor to Replace Bushings | $200 - $450 |
| Complete Control Arm with Bushings | $50 - $150+ (per arm) |
| Wheel Alignment (Recommended after replacement) | $80 - $150 |
Note: Labor costs can vary significantly based on shop rates and whether you are replacing just the bushings or the entire control arm. Replacing the whole arm is often faster for the mechanic, which can sometimes offset the higher part cost.
Frequently Asked Questions (FAQ)
Do I need special tools to replace control arm bushings?
Yes, typically. Removing old bushings and pressing in new ones requires a hydraulic press or a specialized bushing press tool. While some experienced DIY mechanics might manage, it's often a job best left to a professional shop to avoid damaging the control arm. Renting the tool may be an option.
Should I replace just the bushings or the whole control arm?
If the control arm itself is in good condition (not bent or rusted), replacing only the bushings is more cost-effective. However, buying a new control arm with pre-installed bushings and a new ball joint can save a significant amount of labor time and hassle. Given the age of these vehicles, inspecting the ball joints at the same time is highly recommended.
Are there any recalls for my LeSabre's suspension?
Searches on the National Highway Traffic Safety Administration (NHTSA) database did not show any specific recalls for suspension control arm bushings for the 1971-1991 Buick LeSabre. Most recalls for this era relate to other vehicle systems.
How many control arm bushings does my LeSabre have?
A typical rear-wheel-drive 1971-1985 LeSabre has a total of eight front control arm bushings: four for the two upper arms and four for the two lower arms. The rear suspension also has bushings for its control arms (trailing arms).
Helpful Videos
Technical Specifications
The 1971-1991 Buick LeSabre (RWD B-Body) uses a double wishbone front suspension with upper and lower control arms. Each arm requires two bushings. The rear suspension is a 4-link design with bushings on the upper and lower trailing arms. Bushing material is typically rubber or optional polyurethane.
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.