Did he replace the secondary cad? I will look into both of these. Crazy tho it is the exact same sound. My olcdalso got the best of me man. Thank you for posting, I'm glad you got it fixed. I'll make sure to check and see if I have the oem belt on my truck or if it was replaced by the original...
Any luck I have a 2017 with this same issue. I was searching for this exact noise and your video is the same exact noise. Had the noise stick once and was also able to get it to go off by turning off the truck! Let me know what you find