In the lower end of middle throtlle range under klacking nosie fy

Does your Buick have electronic level control (ELC), which utilizes air adjustable shocks. ELC maintains the rear trim height under a wide range of loads. Refer to ELC, as applicable ? Have you changed shocks on the back ?

Probably a broken spring or shocks.

In top load washers, if the machine goes through the cycles and then just stops at the spin cycle and leaves you with no noise and a tub full of water more than likely the lid switch is bad and not completing the circuit for cycle to continue. This is a safety precaution to prevent injury by reaching in the machine while at high speed spin. You can usually look and visually see the spot where the switch should be and if damaged. How to repair :
1) Unplug the machine. 2) At the head, or control panel, find the two screws that hold it to the case. Some are on the left and right front lower corners of the panel, and some are vertical facing s on the rear left and right side. Also on some models they are in the front but you have to pull the end caps off the sides of the control panel. 3) Remove the 2 screws and then pull the panel from the lower part of it towards you and roll it backwards. 4) Disconnect the lid switch connection in the the middle where the two grey wires and the green wire block connects to the body of the machine, usually near the middle under the panel. 5) with a flathead screwdriver pop out the two brass retainer clips on the right and left side. 6) Open the lid slightly where you can grab the case, not the tub, just the case, and pull forward and surprise!!! You just took the complete top, sides and front of the machine off. The lid switch will be attached to this portion so located it, remove the two screws that hold it in place, under the lid, and swap out with a new one. This is a cheap repair, just take your time and you'll be fine,

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jason_4570d45317834dd3

Lower control arm bushings and lower ball joints can cause a noise like this. But I have fixed a few that sounded like the front end was falling offf. It turned out to be the air conditioning plenum under the dash. There is a tube that comes loose some how. this tube stretches all the way across the dash. you can see part of it under the drivers side, it disappears in the center. I take a piece of thick foam and wedge it under the tube towards the center column. Most times this gets rid of the noise or most of it. No one wanted to pay to take apart the dash to fix the passenger side.

Make sure your wheel lugs are tight. If they are, chances are you have a bad hub bearing. Alignment affects tire wear and causes a pull to either side. it will not make a noise.

check and change the wishbone mount on the motor to the front end also check the lower rear angine mounts

Things that make noise:

steering rack
intermediate steering shaft
steering column
front sway bar links
lower control arms (the bushings fail)
front hubs
brake rotors (vibration when stopping)

you should replace brake hardware if you did not. use proper brake lubricate and bleed the system after all.

If it's not your strut mounts i would check lower and upper ball joints hope this help if you have any more que. i can help you  just ask

Friend,
ngfam1 At your service!

Sometimes this can happen when the connector from the transmission to the drive of the agitator is worn and needs to be replaced.Similar to the drive shaft of a rear wheel drive v-8 car!

Could make this sound first, like a knock,knock,knock or klack, klack,klack
OR,SOMETIMES JUST NO SOUND AT ALL AND JUST NOT CONNECTED FROM THE TRANSMISSION TO DRIVE THE ROTATION OF THE TUB!
This means you need parts! and service!
How old is the washer if it is 10 years old or more I recommend being prudish about investing a lot of money in to it!
The newer models are so much more energy efficient, that they save you water,gas or electricity And detergent too!
They can pay for them selves in energy savings in a few years!


If so here is a good company that's found nation wide.
A&E Factory Service
A&E has schedulers available to take appointments 24/7
And they do warranty work too, for most manufactures!
1(800) 905-9505

You will be fine
Bless You ngafm1
PLEASE GIVE ME A GOOD RATING BEFORE YOU SIGN OFF!