1998 cadillac deville low beam lights not working
Both low beams may just be burned out. One may have been out for a while and you just did not notice now the other one has burned out and it seems there is a problem because both are out but just needs to be replaced.
Search Cadillac DeVille Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Cadillac DeVille Experts