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2022 Enclave Avenir: Rear End Sagging and Bouncy Ride

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Mike T. · rep 0 · May 25, 2:45 AM · 1 replies · solved · Question

Vehicle: 2022 Buick Enclave Avenir

Hi all,

I own a 2022 Buick Enclave Avenir with about 30,000 miles. Recently, I've noticed that the rear end of the car seems to be sitting a bit lower than it used to, especially when I have passengers or cargo in the back. The ride quality has also deteriorated; it feels much bouncier and less controlled over bumps, almost like the rear shocks aren't doing their job.

I haven't hit anything hard, and there are no warning lights on the dash. I'm wondering if this is normal wear for shocks/struts at 30k miles, or if there might be something else going on. I know the Avenir trim often has more advanced suspension. Could it be related to that?

Any insights or similar experiences with newer Enclaves would be greatly appreciated. Thanks for your help!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 2:45 AM

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ClearTheCode admin answer:

Experiencing a sagging rear end and a bouncy ride in your 2022 Buick Enclave Avenir, even at 30,000 miles, points to potential issues with the rear suspension components. While 30k miles is a bit early for complete failure of high-quality components, it's not unheard of, especially if the vehicle has frequently carried heavy loads or traversed rough roads. The Avenir trim often features continuously variable real-time damping (magnetic ride control) or other advanced suspension tech, which can have its own specific failure modes.

Common Causes:

  1. Worn Shocks/Dampers: The most likely culprit for a bouncy ride. If the internal valving or seals in the shocks fail, they lose their ability to dampen suspension movement effectively, leading to excessive bouncing and a less controlled ride. While early, it's possible.
  2. Weakened Coil Springs: Over time, or with consistent heavy loads, coil springs can lose their tension, causing the vehicle to sit lower (sag) and reducing its load-carrying capacity. This often contributes to a 'bottoming out' feeling.
  3. Damaged or Leaking Air Suspension Components (if equipped): Some premium trims might feature self-leveling or air suspension. A leak in an air spring, a faulty air compressor, or a malfunctioning height sensor could cause the rear to sag and affect ride quality. Check your specific Avenir's features.
  4. Damaged Suspension Bushings: While less likely to cause sagging, worn control arm or sway bar bushings can contribute to a less controlled, sloppier ride.

What to do:

  • Step 1: Visual Inspection: Park your Enclave on a level surface. Visually inspect the rear shocks for any signs of fluid leaks (oily residue). Also, check the coil springs for any cracks or signs of corrosion. If you have air suspension, look for visible damage to the air springs or lines.
  • Step 2: Bounce Test: Push down firmly on the rear bumper and release. The vehicle should settle quickly after one or two bounces. If it continues to bounce excessively, the shocks are likely worn.
  • Step 3: Measure Ride Height: Measure the distance from the center of the wheel to the fender arch on both sides of the rear and compare it to the front or factory specifications (if available). This can confirm if there's a significant sag.

When to see a shop:

It's advisable to have a professional mechanic inspect your rear suspension. They can accurately diagnose the condition of your shocks, springs, and any advanced damping systems your Avenir might have. Addressing suspension issues promptly is important for maintaining vehicle handling, tire wear, and overall safety, especially since a compromised suspension can affect braking and stability.

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