Belt squeal at startup

[Ezekiel2517]

Does anyone elses truck have an abnormal squeal at startup.  It almost sounds like it is going to throw a belt while it idles.  When I put in reverse it goes away.  Does not seem so bad after its warmed up.

[mistaare]

My 2020 AT4 (with 1200 miles) did it for a hot second the other morning when it was 15 degrees.

[truck_newbie]

On 11/14/2019 at 4:20 PM, Ezekiel2517 said:

Does anyone elses truck have an abnormal squeal at startup.  It almost sounds like it is going to throw a belt while it idles.  When I put in reverse it goes away.  Does not seem so bad after its warmed up.

It's not coming from the belt or exhaust flappers. Multiple people have reported this and it seems to only be happening with the 6.2 w/ 10sp. I experience it too. Some mornings are worse than others. I think it's coming from the 10sp transmission. There is a lengthy thread no this. 

 

[robhildebrand]

I have have it on my truck 5.3 ,I'm getting my first oil change and have asked to have the squeal looked at ,dropping off night be for so they can get a cold start