[Rolfomatic]

I have 2 noises I'm trying to figure out. I acquired a 2013 SS 1LE with 7000 miles a week ago. Just noticed a couple of new noises. Have put on about 200 miles.

Noise 1:
When accelerating in 3rd or 4th gear at around 2500-3000 rpm I hear a slight rattle but only when accelerating. Don't notice it when coasting or in 1st or 2nd gear. Very slight and almost didn't notice it. But passenger did too.

Noise 2:
Got home and left the car at idle, popped the hood, heard an intermittent noise/rattle which is clearly coming from the engine component in the attached pic. I've been trying to figure out what this engine component is, a/c compressor I think. The belt on this component appears to move continuously but the component cycles intermittently when idling, lIke 10 seconds on, 20 secs off, for example. This noise could be the same noise as Noise 1.

Any help is appreciated.