Whining noise when accelerating

[Joey Livingston]

Have a 2021 6.2 Trail Boss and having whining noise on acceleration when driving only. Replaced pulley and belts already same issue. It starts making noise after 2k rpms. It is intermittent and almost sounds like something either with throttle or air intake. 

Edited December 22, 2022 by Joey Livingston
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[calgator73]

5 hours ago, Joey Livingston said:

Have a 2021 6.2 Trail Boss and having whining noise on acceleration when driving only. Replaced pulley and belts already same issue. It starts making noise after 2k rpms and continues.

IMG_4686.MOV

Couldn't play your video.  Can you replicate by brake torquing the motor a little?

[Joey Livingston]

2 hours ago, calgator73 said:

Couldn't play your video.  Can you replicate by brake torquing the motor a little?

I tried it while holding brake down in gear and started to do it but you cant really go high rpms while doing it.

[Joey Livingston]

9 hours ago, Joey Livingston said:

Have a 2021 6.2 Trail Boss and having whining noise on acceleration when driving only. Replaced pulley and belts already same issue. It starts making noise after 2k rpms and continues.

 

 

[It's Tim]

No need for these cryptic broken links, post a video on YouTube and just paste a link here.

[Joey Livingston]

11 hours ago, Joey Livingston said:

Have a 2021 6.2 Trail Boss and having whining noise on acceleration when driving only. Replaced pulley and belts already same issue. It starts making noise after 2k rpms and continues.

 

[Joey Livingston]

2 hours ago, It's Tim said:

No need for these cryptic broken links, post a video on YouTube and just paste a link here.

 

[calgator73]

That sounds very similar but more intense than what I experienced as I could only hear the noise outside the truck.  I take it with belts and pullies being replaced the dealer has isolated this to the engine bay and not the transmission bellhousing area?

[Method2Madness]

Sounds like A/T tire noise or wheel bearing to me. 

[newdude]

Sounds like its in the transmission or transfer case.  

[brianravelo]

Were you able to find what the problem was?  I just bought a 2021 sierra 1500 with same exact noise.

[LJeanD]

Did you find out what the whistling noise is? My 2022 Sierra does it too. Drives me nuts. 

[brianravelo]

Still going at it.  It was not the belt and the pulley.  I’m thinking the problem is bigger.  I have agreed with the service rep to drop it off in January so they keep looking at it.  Hopefully they can figure it out.

[oldmann]

check to see if the bottom of the intake boot is on at the throttle body.

[Grunt03TX]

Just bought a 2024 trail boss 1500 2 weeks old and makes this sound driving me crazy!!