My grape vine is dying! Can you help?

Question:The vine was doing great and suddenly all of the new leaves on the ends of the vine died, and now the vine itself is dying from the tip down. What happened? What do I do to fix it?

Answers:
You don't say where you live.If it has gotten really cold the vine could have frozen if it wasn't tarped and insulated from the frost.Since it is dying starting from the tip, I would think frost damage.