Can someone help identify his grinding noise?

[Silentbob6]

2017 Tahoe 5.3 4x4. 166,000 miles. Just recently started noticing this grinding noise during startup and slow acceleration. I’m not even sure if it’s coming from the engine. I thought it might be maybe an exhaust sound like a loose clamp. I’m not sure. I’ve owned it since 33,000 miles and it’s been very good to us besides a new transmission at around 140,000 miles.
Thank you

 

[OR VietVet]

Welcome to your first post after 6 years as a member.

If you are talking about the noise when you accelerated the one time, could be numerous things. Sounded like an exhaust noise from either a leak or clogged exhaust but you did not say if the noise affected the power of the engine.

Be better to record with hood up. You can also buy an inexpensive mechanic's stethoscope and use it to try and narrow down the location of the noise.

 

[Fless]

Sounds a little like a shield vibrating. Is that cold idle? What rpm is it in the video?