I have a Whirlpool Imperial Series Ultimate Care II. It will not drain after the wash cycle. This happened suddenly. I have not noticed leaks and no water backed up in the hoses.

It will be something blocking the water exit system usually a sock gain access to the drum assembly normally at the rear of the unit you should see the exit hose if you sqeeze it and there is water in it the block is there about . Get something to collect the water and remove the assembly between the drum and the pump do it from the highest piont to allow the water to be release slowly as possible. Usually a sock !!!