Noise when accelerating

[Jcf8]

My 2015 Chevy Sonic is making a loud grinding sound when I accelerate at slow speeds. Just changed the belt and didn't fix it.

Not sure if it can be related but it's having AC issues as well that the mechanic related to the compressor. After changing the compressor it's still not performing at it's best.

Any idea what the sound could be? I've taking it to the shop several times and the mechanic keeps telling me the car is in perfect shape.

 

[melk]

Is it directly related to throttle? In other words when you take your foot off the gas does the noise also stop?

 

[Jcf8]

Is it directly related to throttle? In other words when you take your foot off the gas does the noise also stop?

Yes!

 

[Cmaj44]

Any updates on a solution?

 

[jayg]

My 2015 Chevy Sonic is making a loud grinding sound when I accelerate at slow speeds. Just changed the belt and didn't fix it.

Not sure if it can be related but it's having AC issues as well that the mechanic related to the compressor. After changing the compressor it's still not performing at it's best.

Any idea what the sound could be? I've taking it to the shop several times and the mechanic keeps telling me the car is in perfect shape.

I know this is an older post but I was having the exact same issue and managed to solve it by replacing the exhaust manifold catalytic converter. I am not experienced in working on cars and was able to do it within a day with an $80 part from Amazon and I was told it was the transmission from the mechanic shop.