What causes the abnormal noise in GLC on bumpy roads?

[Frieda]

Here are the specific reasons for the abnormal noise when the GLC drives on bumpy roads: 1. Check the car's shock absorbers. It's best to go to a 4S shop or repair shop and use a lift to raise the vehicle to inspect whether there are gaps in the shock absorbers or faults in the suspension. If the shock absorber is leaking oil, it may be due to a faulty oil seal gasket, and the shock absorber needs to be replaced. Generally, the service life of shock absorbers is 80,000 to 100,000 kilometers. When the car has driven 80,000 kilometers, you can ask the technician to pay attention to the condition of the shock absorbers during regular maintenance. If there is a fault, repair it in time. 2. Excessive gap in the steering tie rod ball joint may also cause abnormal noise when turning. In severe cases, there may be steering wheel shaking or tire wear, and the ball joint should be replaced at a 4S shop or repair shop promptly. 3. Excessive gap or looseness in the lower control arm. The lower control arm is an important component that maintains the elasticity of the car body and is part of the car's suspension. The lower control arm connects the axle and the frame, buffering the impact of bumpy roads on the car. Once the lower control arm fails, it should be replaced at a 4S shop or repair shop promptly.

[ColeAnn]

I've encountered the GLC making strange noises on bumpy roads a few times, and the most common causes seem to be loose or aging suspension components. Parts like shock absorbers and bushings wear out over time and tend to squeak when going over potholes. Check the front suspension control arms—if the bolts are loose or the rubber bushings are cracked, they'll make noise when vibrations increase. Loose stabilizer bar links are another common culprit; last time I found this issue, I tightened the nuts myself and the noise reduced. Also, loose brake calipers can easily produce noise on rough roads. I recommend driving slower on bumpy sections, performing regular suspension maintenance, and even shaking the car body to listen for abnormal sounds—address issues early to avoid major repairs. Never compromise on driving safety; don't delay if you notice this problem—it's best to have a professional inspect it.

[JoannaLynn]

The root cause of abnormal noises on bumpy roads mostly lies in chassis components. When I drive my GLC on rough roads, there's a constant rattling sound. After much investigation, I found it was caused by loose stabilizer bars or shock absorber links colliding. The chassis has various links and bushings, and if the rubber gaskets age and harden, they'll squeak when compressed. The exhaust pipe brackets underneath the car might also loosen, creating metal friction noises. I recommend starting with the basics: get under the car to check bolt tightness and component wear. I've personally tried tightening some connection points with immediate results. During routine maintenance, remember to apply some lubricating grease to prevent aging and keep the chassis clean to reduce corrosion. Bumpy driving accelerates wear, so controlling speed and avoiding rough roads can extend component lifespan.

[SanHayden]

The common cause of rattling noises in the GLC when driving on bumpy roads is loose interior trim components. Parts like door panels, seat mounting points, or the trunk lid may produce friction sounds if their clips become loose. I would first check the tightness of all interior trim, especially items in the rear seating area and storage compartments that might be hitting the body. Additionally, aged seals or a loose sunroof could also lead to rattling. Try pressing on different areas while driving on rough roads to locate the source of the noise—it's often an easy DIY fix. Keeping the interior tidy can minimize noise from loose items. If rattling occurs frequently, address it promptly to maintain driving comfort.