Take the front panel off so you can better localize the source of the noise. To remove, insert and push hard on putty knife into the top groove in line with the lid opening on each side to release the clips. Then tilt panel outward and lift from cabinet. Check for broken dampener straps. Look up from open front panel. There are four black rubber dampening straps in each "corner" of the outer tub that prevent the tub from swinging too far back and forth during the agitation cycle. Make sure the bottom of the tub support assembly is not hitting the bottom of the washer during agitation.

Eric