What Causes the Buzzing Resonance Sound in the Excelle?

[SanAngelina]

Buzzing resonance sound in the Excelle may be caused by engine mounts. Below is an introduction to the Excelle: 1. Overview: The Buick Excelle is based on General Motors' global platform. The prototype of the Excelle is a globally developed mid-size sedan designed and developed by General Motors Daewoo Auto & Technology (GMDAT). 2. Positioning: The Buick Excelle is positioned as an entry-level family car. Its dynamic exterior and high-quality interior provide a premium experience for 'your first car.' The new drive system ensures smooth and fuel-efficient performance, while the entire lineup comes standard with the 10th-generation OnStar assistant, featuring built-in 4G LTE mobile hotspot and eConnect smart connectivity technology, supporting Apple CarPlay and Baidu CarLife.

[SpencerAnn]

I've been driving my Excelle for many years, and the most common cause of buzzing noise is the aging of engine mount rubber. It's like a cushion with holes, allowing vibrations to directly transmit into the cabin, especially noticeable at speeds of 40-60 km/h. Sometimes, it's due to loose or rusted exhaust pipe connections causing noise because the exhaust vibration frequency resonates with the car body. Last time my car had a buzzing sound, I lifted it up and found all the mounting bolts were loose—tightening them fixed the issue. If left untreated, the vibrations could potentially damage the engine. I make it a habit to check all mounting points during maintenance, focusing on prevention. Safety first—don't wait until the buzzing gets louder to fix it.

[SaraDella]

From a car modification perspective, the buzzing noise might stem from the tires. Unbalanced wheels or deformed old tires can cause vibrations at high speeds, leading to cabin resonance. Some factory parts on the Excelle may have design shortcomings, and an unstable exhaust system modification can also amplify noise. It's recommended to start with a tire dynamic balance test, which is cost-effective. If aftermarket parts have been installed, check and reinforce the mounting points. Adding vibration damping pads can alleviate the issue. Don't overlook minor anomalies in daily driving.

[HannahDella]

Every time I hear a buzzing sound, I become very alert. For the Excelle, it's often due to loose screws on the door panels or large gaps in the trunk panel, which cause resonance from vibrations. Small details inside the car, like loose items or unstable seat cushions, can also produce similar noises. Although these are minor issues, they can affect driving concentration. It's recommended to manually check and tighten the screws, and try adding some soundproofing foam.