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Discussion Starter · #1 · (Edited)
1st time GMC owner and 1st post in the forum.

I was hoping if any of you 2021 Yukon owner could see if you hear a whistling noise after the auto start cuts back on. Make sure the AC is turned off...helps engage the auto stop easier.
I only noticed it after I stopped to talk to a neighbor and rolled down my window to talk. When it cranked back up, we both looked at each other, like WTF was that noise. At that point, I haven’t played the radio since to see if I can catch any other odd sounds. Well, it does. I’ve noticed it makes a pronounced whistling sound when pressing the gas in between 30-50 mph and when slowing down from 20-10mph, it makes another odd spinning sound, when it downshifts.
I took it to the dealership and they gave me the ol...we couldn’t duplicate it BS. So I have requested to compare my auto start with another 2021...still haven’t gotten that call.
Can any of you 2021 owners tell me if you are hearing the same sound when you car restarts from auto stop or if you hear an odd spinning sound when pressing the gas? I’ve made a few YouTube videos in hopes someone out there is experiencing the same thing. Please look up 2021
GMC Yukon Engine Noise. Ideally test it on roads that aren’t high in traffic, if you do it. Any feedback will be greatly appreciated!!!
 

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1st time GMC owner and 1st post in the forum.

I was hoping if any of you 2021 Yukon owner could see if you hear a whistling noise after the auto start cuts back on. Make sure the AC is turned off...helps engage the auto stop easier.
I only noticed it after I stopped to talk to a neighbor and rolled down my window to talk. When it cranked back up, we both looked at each other, like WTF was that noise. At that point, I haven’t played the radio since to see if I can catch any other odd sounds. Well, it does. I’ve noticed it makes a pronounced whistling sound when pressing the gas in between 30-50 mph and when slowing down from 20-10mph, it makes another odd spinning sound, when it downshifts.
I took it to the dealership and they gave me the ol...we couldn’t duplicate it BS. So I have requested to compare my auto start with another 2021...still haven’t gotten that call.
Can any of you 2021 owners tell me if you are hearing the same sound when you car restarts from auto stop or if you hear an odd spinning sound when pressing the gas? I’ve made a few YouTube videos in hopes someone out there is experiencing the same thing. Please look up 2021
GMC Yukon Engine Noise. Ideally test it on roads that aren’t high in traffic, if you do it. Any feedback will be greatly appreciated!!!
I have posted a couple of times about issues with my 2021 Tahoe Premier. Today i went to the dealer because of that same noise. I’m tired of their bullshit, I was planning to lemon it, but my wife has talked me into buying something else. This car has cost me more in my wasted time than any other vehicle, bar none. I getting an Expedition , it certainly cant be any worse.
 

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If the noise problem is the transmission, keep in mind that the Ford Expedition uses the same transmission. The transmission is a joint venture between Ford & GM.
 
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