A904 debris in pan

There is usually a little sludge just below the filter when pulling the pan. Just material from the clutches and some small sparkly particles. The brass or copper colored sparkles are usually a little thrust washer material. The silver colored is aluminum or gear material. A little of each is normal. If there's quite a pile it is cause of alarm but Torqueflites are quite tough and may last a long time with a new filter and some fresh fluid.