I just purchased my first Silverado, 2015 LT 1500, 5.3 with 135k miles in great shape after a deer took out my beloved 1998 Tahoe (RIP).
Of course it started not to long after I took her home. I replaced all three belts and the tensioner. With a gates kit off rock auto. I spun each pulley by hand and they all felt smooth.
I happens after I start it up with or with out the remote start. I get a horrible noise a couple seconds after it starts up. Attached is a video.
Any ideas of what it could be?
Attached is a Video