GMC Terrain owners are affected, too.
We ve long known that listening to loud music is bad for your hearing. It doesn t matter whether you re using headphones or listening to the stereo in your home or car. Loud is loud. And if you re the owner of a 2018-2021 model year Chevrolet Equinox or GMC Terrain, then you should be aware of a new technical service bulletin (TSB) from General Motors first noticed by GM Authority.
The problem involves the crossovers power window motor losing memory because of intense speaker vibration. More specifically, the front windows could lower by approximately one-quarter of an inch or more if the audio system is too loud or is playing music with heavy bass.