Spin Shake ...

how confident are you to get inside it? Check the balance springs and shock absorbers.

Normally it is two simple things.

First the machine must be level front to back and left to right. Also all 4 feet must be in equal contact with the floor.

Make sure you load the washer evenly with clothes. Mix large and small items so when the spin starts the clothes even out. Never wash just one large item that is very absorbent, like one bathrobe or one blanket..

Hello. From what you are describing, there might be a problem with the suspension rods being worn out. The part number for those rods(you will need to purchase 4 of them if even one is worn out) is DC97-16350E. You can check the viability of the rods by following this:
Open the lid of the washer. Place your hands on each side of the tub ring(the round plastic part just above the spin basket where the clothes are placed). Next, smartly shove down on the tub ring and release it. The tub/basket assembly should grip going down and pull coming up--(no bouncy, hobby horse wiggly movement at all). The suspension rods act just like automobile shock absorbers. When you push down on a corner of a car, it should come up and immediately settle with no bounce. I've seen washers have worn out rods after less than a year--remember, 3/4 full is a full load on the HE top load units. That's about 4 inches from the ring mounted at the top of the basket, (filled with a heavy fluid for stability). That's what you hear sloshing around(not water). I hope I helped you!

This is a tough one as so many things can trigger the OL overload first I would raise the top panel check the 4 suspension rods one each corner make not bent that the spring still attached at bottom also up top where rods hook into plastic cup that there is no rust so the plastic inserts can move freely if all is good remove basket from tub making sure nothing in between pretty common with the machine empty grab the basket and see if you can raise it about an inch and it falls back into place it should this is the hub that engages, a cracked basket ring that has lost its fluids with do this very rare with an empty machine spin the basket you should her what sounds like water sloshing around this is the fluid in the basket ring have seen them loose normally you get a clicking sound now the tech sheet does not offer any help with unbalanced load or over load but to say redistribute load there are no sensors on the machine to create these codes the control senses drag on the motor which causes this to flash after checking everything I mentioned the factory would recommend changing the RPS sensor first from there the rotor and stator then the control usually when these parts are suspect you would get an F47 error code sorry I cant pinpoint the problem but usually these codes appear in the spin cycle not wash.

UL Stand for unbalanced load
probably the balance rods washer has 4 of them and they work like shocks for the tub and if they go bad than they allow the drum to spin wildly.

Snubber ring that tub and spin basket assembly sits in is most likely worn. Very inexpensive part but extensive labor involved. I would suggest calling a competent service tech.

If the washer throws an UL error code with out any clothes in the washer then the issue must be concerned with the mechanical alignment inside the machine or a bad CCU.

The most common problem which can cause this is some sort of mechanical hinderance which does not allow the basket to move freely.

The suspension system which holds the basket in its place might be faulty and causing the unbalancing. In this model i think there are plastic ring at the bottom of the basket . Even if they are worn out or moved out of position it may cause the UL error code you are facing

You have a blockage in pump or an item of clothing between drum and pump if water cant get out or is slowed the spin speed wont rise

make suse unit is leveled.

bad lid switch