2019 Sliverado 1500

[Chevy19]

I got a brand new 2019 Sliverado 1500 LTZ 5.3 with about 1,000 miles and its making a whining / whistle noise while I accelerate Does this sound normal ? I think it’s coming from the alternator. Please help. The Alternator was whining / whistling while it was Idling today. I caught this video today this afternoon. Please help!

 

 

[mafd2]

There's a few threads in the troubleshooting section with a whistling noise in the cab but I don't think it was at idle but slow speeds.  It was caused but the fuel tank filler vent line that was too small and would collapse causing the whistling.  The fix on the service bulletin is part #84626475 Hose 3.120 Y. Yours does sound like it's coming from the engine bay.  Do you hear it inside the cab and at certain speeds?

[towdog333]

take it the dealer