i have a frigidaire front load washer gltf2940es0 last week it would not go to the final spin cycle replaced the door lock switch worked great for a week now washer won’t start at all just keeps reading LOC on display
Your machine has some built in diagnostics, use this service manual to check things out.
http://frigidaireservicetips.com/pdfs/490_3cuftHorizontalAxisWasherSM.pdf
Concentrate on the speed control board. It is the weak link in these models.