Whirlpool calypso GVW9959Q - Black stains on...

At the end of the cycle, the wash plate nutates for
approximately 30 seconds to fluff the clothing after the
final spin. The action of fluffing causes the outer wash
plate seal to rub against the stainless steel basket while
they are both relatively dry. This condition causes the gray
discoloration.
RESOLUTION:
An updated machine control, part number 8542693, is
now available. The updated control reduces the fluff time
from 30 seconds to 8 seconds, allowing the clothing to be
fluffed, without causing discoloration.
Gray marks or smudges can be washed out of clothing
after wiping down the basket. The consumer should use
the recommended amount of HE detergent and the hottest
water safe for the fabric or hand wash the garment under
running water. In either case, the fabric must be cleaned
prior to running through the dryer