Ps. Being as the add blue isn't working, know that after some miles, your going to get about 5 codes, your check engine light will come on. You may have to replace your 02 sensor. I'm betting, once i fix the DEF problem, the codes will clear.
Being as parts to fix it are unavailable, replacing whole tank is $$$$$ i'm getting a malone DEF delete tune. They don't test emissions where i live. So a tune is the easiest, least expensive fix. Good luck with yours, and love those grands!
Add blue light came on. I refilled. Light won't go out. I have 100 miles till no start. Does anyone know if car will shut down while driving? Or after i've reached/gone over limit, will not start after i turn it off?