GM Volt Forum banner

2017 That whistle sound

2324 Views 7 Replies 5 Participants Last post by  MikeyCVolt
I typically drive with the radio at least at low volume but yesterday I did a whole trip in my 2017 LT with the radio off so I could talk to passengers. I noticed a whistling sound which happens only at one specific throttle position. It reminds me of the sound you get out of a cordless drill when you only press the trigger slightly and the motor makes a whistling sound.

Letting up on the throttle just a tiny bit or pressing it a little more just a tiny bit makes it go away. I'd say the throttle position where it happens is maybe 1/10 throttle, maybe less: about the point where you'd have it if you are trying to hold say 30 MPH.

So my question: I assume this is normal and this is typical of how electric motor power is modulated (like a cordless drill)? It's not very loud but it's noticeable inside the cabin with all the windows up.

1 - 3 of 8 Posts
Cool. Thanks for the info. Guess I'm still getting used to all the small sounds you sometimes hear when everything else is silent. :)

Edit: full throttle motor sound is different. I like that too!

My RC cars with electronic speed controllers have always made a similar whine so it sounds normal to me. I'm just excited to hear it coming out of a 1/1 scale car. ;)

1 - 3 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.