Suspension Control Arm Bushing Guide for the 1977-1985 Cadillac DeVille
Restore that classic, smooth Cadillac ride and eliminate suspension clunks and rattles.
- For a 1977-1985 DeVille, choose rubber bushings from brands like Moog or Delphi to maintain the classic smooth, quiet ride.
- Polyurethane bushings (Energy Suspension, Prothane) will make the ride harsher and are not recommended unless you want a performance feel.
- Replacing the entire control arm is often easier than pressing out old bushings, though it costs more for the part.
- A four-wheel alignment is mandatory after replacement to ensure safety and prevent rapid tire wear.
Is Your DeVille's Ride Getting Noisy and Loose?
The control arm bushings on your 1977-1985 Cadillac DeVille are a normal wear-and-tear item. After decades of service, the original rubber dries out, cracks, and loses its ability to properly cushion the suspension. This leads to several problems that can degrade the car's luxurious feel and impact safety. Recognizing the symptoms early can help you restore your car's handling and prevent more costly repairs down the road.
Symptoms of Failing Control Arm Bushings
Worn bushings allow for excessive movement in the suspension, leading to several distinct signs:
- Clunking or Knocking Noises: This is the most common symptom. You may hear a clunk or pop from the front end when going over bumps or during braking. This is the sound of the metal control arm moving excessively and hitting the frame.
- Steering Wander: The car may feel like it's pulling to one side, requiring constant steering corrections to drive straight. This happens because worn bushings can no longer hold the wheel alignment steady.
- Vibrations: You might feel vibrations in the steering wheel or the floor, especially at higher speeds. Worn bushings fail to absorb road vibrations, transferring them into the car's cabin.
- Uneven Tire Wear: Bad bushings cause incorrect wheel alignment, which can lead to the inside or outside edges of your tires wearing out much faster than the rest of the tread.
Known Issues, Recalls, and TSBs
As of early 2026, there are no active recalls or specific Technical Service Bulletins (TSBs) from the NHTSA for suspension control arm bushings on the 1977-1985 Cadillac DeVille. Any problems you encounter are due to the age and normal wear of these components.
Choosing the Right Aftermarket Bushing Kit
Since original GM parts are generally unavailable for a vehicle of this age, you will be choosing from aftermarket brands. The right choice depends on your goals: do you want to preserve the original soft ride, or are you looking for a firmer, more responsive feel?
Brand & Material Tiers for Your DeVille
Premium / OE-Style Ride (Rubber):
Brands like Moog, Delphi, and ACDelco Professional are premium aftermarket choices that aim to meet or exceed original factory standards. They typically use rubber bushings designed to restore the soft, quiet ride your DeVille had when new. For a classic luxury car like the DeVille, most owners prefer rubber bushings to maintain the original comfortable feel.
Performance / Firmer Ride (Polyurethane):
If you want to improve handling and steering response, consider polyurethane bushings from brands like Energy Suspension, Prothane, or Nolathane. Polyurethane is a harder, more durable material that doesn't flex as much as rubber. The trade-off is a noticeably stiffer ride with more road noise and vibration transmitted into the car, which may not be desirable for a classic Cadillac.
Standard / Value:
Brands like Mevotech and QuickSteer often provide a good balance of quality and affordability for a standard repair. They are a reliable choice for daily drivers where restoring original function is the main goal.
Bushings Only vs. Whole Control Arm
Replacing just the bushings requires a large hydraulic press and special tools to remove the old ones and install the new ones. For many mechanics and DIYers, it is often easier and more time-efficient to replace the entire control arm, which comes with new bushings and a new ball joint already installed. You should check the cost and availability of complete control arm assemblies before deciding.
Aftermarket Suspension Control Arm Bushing Kit Cost
| Item | Estimated Cost | Notes |
|---|---|---|
| Aftermarket Bushing Kit | $11.85 - $116.44 | Price varies by brand, material (rubber vs. polyurethane), and whether the kit covers one or both sides. |
| Shop Labor | $300 - $600 | This is for replacing the bushings on one axle (front or rear). It can vary significantly by shop and location. |
| Wheel Alignment | $80 - $150 | A four-wheel alignment is mandatory after this repair to prevent unsafe handling and rapid tire wear. |
Frequently Asked Questions
Should I use rubber or polyurethane bushings on my DeVille?
For a classic Cadillac DeVille, most owners should choose rubber bushings. Rubber provides the smoothest, quietest ride, preserving the car's original luxury character. Polyurethane is for performance and will make the ride significantly stiffer and potentially noisier.
How many bushings does my Cadillac DeVille have?
A 1977-1985 DeVille has a front and rear suspension. The front has upper and lower control arms on each side, typically with two bushings each, for a total of eight bushings in the front. The rear suspension also uses control arms with bushings. It is best to inspect all of them and replace them in pairs (e.g., both front lower, both rear upper).
Do I need a wheel alignment after replacing bushings?
Yes, absolutely. Replacing control arm bushings will alter your vehicle's suspension geometry. A four-wheel alignment is required to ensure your car drives straight, handles safely, and to prevent premature tire wear.
Can I replace control arm bushings myself?
This is a difficult DIY job. It requires safely lifting and supporting the vehicle and disassembling major suspension components. The biggest challenge is that the old bushings must be pressed out and new ones pressed in using a hydraulic press or a specialized bushing press tool, which most DIYers do not own. It is often easier to replace the entire control arm assembly.
Technical Specifications
The 1977-1985 Cadillac DeVille uses a front suspension with upper and lower control arms and a four-link rear suspension, all of which use pressed-in bushings. Bushings are available in original-style rubber or firmer polyurethane. The front suspension contains eight bushings total (two per control arm), with additional bushings in the rear suspension.
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.
- 🛍️ Shop This Part
- Is Your DeVille's Ride Getting Noisy and Loose?
- Symptoms of Failing Control Arm Bushings
- Known Issues, Recalls, and TSBs
- Choosing the Right Aftermarket Bushing Kit
- Brand & Material Tiers for Your DeVille
- Bushings Only vs. Whole Control Arm
- Aftermarket Suspension Control Arm Bushing Kit Cost
- Frequently Asked Questions
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