If your belt is on and good. Check lock light elumination in spin. You may have a door latch problem. Check to see if door latch/lock is working. Worst case is a defective control board or moter.
Michael Crockett-repiar tech. 12 yrs., May 2006
check to see if belt is on thru the back.. mine poped off... and now i have to replace the whole tub cause its all off balance...crappy.. could just be the belt though