Clunking noise from front suspension over bumps on my 2018 Enclave

ClearTheCode admin answer:

A clunking noise from the front suspension, especially over bumps, is a common complaint and usually indicates wear in specific components. Given your 2018 Buick Enclave Premium has 75,000 miles, several parts could be reaching the end of their service life.

Common Causes:

1. Worn Sway Bar Links: These are a very frequent cause of clunking noises. The bushings or ball joints on the sway bar links can wear out, creating play and noise.
2. Worn Struts/Shock Absorbers: If the struts are worn, they can bottom out or have internal play, leading to clunking. You might also notice a bouncier ride.
3. Loose or Worn Control Arm Bushings: The bushings that connect the control arms to the frame can degrade, allowing excessive movement and noise.
4. Ball Joints: Worn lower or upper ball joints can also cause clunking, especially when turning or going over bumps.
5. Loose Subframe Bolts: Less common, but sometimes the subframe bolts can loosen, leading to various noises.

What to Check (or have checked):

1. Visual Inspection: Look for obvious signs of wear like torn rubber boots on ball joints or sway bar links, or fluid leaks from struts.
2. Shake Test: With the vehicle safely on jack stands, try to shake the wheels at 12 and 6 o'clock (for ball joints) and 3 and 9 o'clock (for tie rods/wheel bearings) to feel for play.
3. Pry Bar Test: A mechanic can use a pry bar to check for play in control arm bushings and ball joints.

When to See a Shop:

It's highly recommended to have a professional mechanic inspect your Enclave's suspension as soon as possible. Worn suspension components can compromise steering stability, braking performance, and tire wear. Ignoring these issues can lead to more expensive repairs down the line or, more importantly, safety hazards. A shop can properly diagnose the exact source of the clunking and recommend the necessary repairs, which often involve replacing the worn links, bushings, or struts.