What Causes the Abnormal Noise in ATSL Shock Absorbers?
2 Answers
The causes of abnormal noise in shock absorbers include oil leakage and aging of the top mount thrust bearing. Below are the specific reasons for shock absorber noise: Shock absorber oil leakage: When the shock absorber leaks oil, the interior of the shock tube cannot be effectively lubricated, resulting in significant friction noise during operation. Aging of the top mount thrust bearing: The thrust bearing is located in the engine compartment. Open the hood and press down on the body to check if the noise is coming from the shock absorber top mount. If it is, it is likely due to aging of the thrust bearing. If the shock absorber spring is deformed or broken, the entire shock absorber spring must be replaced.
I've been driving a Cadillac ATS-L for several years, and recently the shock absorbers have been making squeaking or rumbling noises, which is really annoying. The common causes of these noises include internal oil leakage in the shock absorbers—once the oil leaks, the damping effect worsens, and the noises become particularly noticeable on rough roads or when going over speed bumps. Another reason could be the aging of rubber bushings; over time, the rubber cracks or deforms, increasing friction and noise. Additionally, the buffer blocks or spring seats might be worn or loose, causing noises when the car shakes on bumpy roads. From my own experience, it's good to check if there are any oil stains on the surface of the shock absorbers or to press down on the car body to see if the rebound is abnormal. If you often drive on city highways, especially on uneven roads, these parts are more prone to premature wear. Last time, I replaced a new shock absorber and bushings, and the problem was solved. In short, don't delay—noise issues left unattended can affect driving safety. It's best to have a professional inspection at a reputable shop, as the suspension system is crucial for the vehicle's stability.
