Hello everyone, Im having an issue with my sonic, everytime I put the key to start the car It makes a lot of noise close to the brake fluid system, the noise go away after I start the car, I want to ask if anybody here know that noise, What can It be? Thanks for reply!

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Welcome to the forums, austin316! We certainly don’t want your Sonic to remain in this condition, and would like to look further into this concern for you. Unfortunately, because we are not certified technicians we are unable to provide you any technical feedback on your noise. Have you had the opportunity to bring this to your dealer’s attention? If not, we would be more than happy to schedule an appointment on your behalf. If interested, please send us your VIN, mileage, preferred dealership and contact information in a private message. We look forward to your response.

Best wishes,

Helen
Chevrolet Customer Care

 

If I had to guess , I would say it has something to do with the antilock brake system .

God bless
Wyr

 

Put your hand or stethoscope on the grey cylinder to the right - is that the noise source?Agree probably part of your ABS but sure sounds wrong. I assume still under warranty?