Need to check left front wheel bearing, and CV joint in the axel.
It could be the brake pad senor scraping the rotor.
From the rear it could be the differential, however those front differentials are notorious for making noise. That whining noise derives from the viscous coupler, and is normal. Bring it to a dealer, not some crappy backyard mechanic. And have a certified Toyota TECHNICIAN inspect the front an rear differential, transmission, and wheel bearings (but those typically hum when bad), I almost gurantee you just hear the viscous coupler noise.
The bearings are damaged.
Yes, the differential can make a grinding sound.
More then likey it is either the left are right front wheel bearing that is bad.
it sounds like a humming or whinning noise, what year is the truck if its from like 01 or up those trucks have a lot of wheel bearinig problems that some one might misdiagnose as a differential noise or it could be chopped tires making the noise.
It could be either a wheel bearing going bad or the front differential could be low of fluid. I would check the fluid first if it is low it could prove to be expensive if the ring and pinon gear gets burnt up or even the bearings. The plug should be in the driver side of the differential case.
If the fluid is ready to be changed, it will make a screaching noise when turned to extreme left or extreme right.
Front Rear End? Does that make sense? Front differential? maybe? Low fluid, wheel bearing, choppy worn tires?
After the Jeep is warmed up, if the creaking noise is noticable during turns at low speeds, then its probably the rear differential. Go to the dealer and have it serviced. All they do is replace the fluid and seal but they use a special lubricant additive.
Control arm is shot.
If you mean "what" is making noise when you turn the steering wheel? It usaually means you need power steering fluid. If you run too long without power steering fluid it will make your power steering go out. If it is making a shuttering noise when you take sharp turns. Your rear differential may need to be serviced. I would have is burnished.
Defective CVC joints. Replace them ASAP.