Metallic banging from front?

2012 dc lb 4wd with 25k.

I've noticed some metallic sounding clicking / ticking that's most noticeable at slower speeds. It's not the normal 'taco tick'. It is not consistent with rpm and using 4wd doesn't change it. However it does silence when you use the brakes. More interesting, I just did a road trip with a load of gear (1500lbs?) and noticed it much more loud, and also noticed more when turning left.

Going to shop on Tuesday but curious if anybody knows what's going on?!

 

Could be a lot of things, but it sounds brake related. How worn down are the pads? Could your brake rotor dust shield be bent? Mine made a similar sound until I bent it back.