Low speed whine

[siscot]

I have a 2019 GT PP1 with an automatic. At 25 to 35 mph there is a random whine that seems to come from underneath the car. It doesn’t happen all the time and seems to be dependent on certain road surfaces. Has anyone else had this issue?

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[njweatherman]

Hmm. I hear the transmission whine at idle, when going in reverse and when slowing down to a complete stop. However, I don't hear a whine like you are describing.
Can you post a video?
Also, what tires do you have? The reason I am asking is because you mentioned it seems to be dependent on the road surface. Some tires are noisy.

 

[siscot]

Hmm. I hear the transmission whine at idle, when going in reverse and when slowing down to a complete stop. However, I don't hear a whine like you are describing.
Can you post a video?
Also, what tires do you have? The reason I am asking is because you mentioned it seems to be dependent on the road surface. Some tires are noisy.

Thanks for the reply. It’s definitely not the transmission and the tires are Michelin pilot sport 4 s. The sound seems to be more on the left side. And is non existent at speeds below 25 or 40 and above

 

[Soulja4187]

Thanks for the reply. It’s definitely not the transmission and the tires are Michelin pilot sport 4 s. The sound seems to be more on the left side. And is non existent at speeds below 25 or 40 and above

The whine you are probably referring to is from the AC compressor, when it magnetizes.

 

[siscot]

The whine you are probably referring to is from the AC compressor, when it magnetizes.

Does this occur even when the AC is not in use?

 

[Soulja4187]

Does this occur even when the AC is not in use?

For me I hear it when on or off

 

[Mike Pfeifer]

It seems like this is something that we will need to hear in order to give any useful advice on. Without that, we are just making wild guesses that will likely not help you at all.

 

[siscot]

It seems like this is something that we will need to hear in order to give any useful advice on. Without that, we are just making wild guesses that will likely not help you at all.

I will try and capture the sound in the near future. Thanks for the suggestion.

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