We need to know the year of your Monte before any answers can be given-- reason being it may be covered by your warranty and if not then there are other threads already on this subject. I would suggest going to the Search engine at the top of this page and type in decals and I think you'll be surprised on how many threads have been written on this subject. It could be bad decals or it could be what you are using on the front to clean it or it could be just age. I have a 2004 model and the decals are still in good shape-(since I've said that- this year they will start peeling or cracking-
) Good luck and let us know what you decide or action taken!