Roaring noise when i let off the gas pedal in my buick encore

Hello, loud whirring or roaring could be coming from the cooling fans under the hood? This is a total guess though. As I always respond when asked about noises: You cannot hear the noise in this forum, so there's no amount of guessing that could possibly be accurate. Seek local guidance at a shop near you that can assist. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops