"DARN TONE IS BACK!" Nadine and Christine says "hi!" The tone left for only a short time after re-installing the radio. The girls said leave update alone for a few days. It's gotta be AC related as it only tones when the AC is on. Yesterday no problem with only using the fan at any speed. Guess next step is to remove the console bezel and see what's back there that might be making that tone. "Seems" there must be some kind of relay or module back there to control the AC.

Took the car for a drive this morning and "nothing" except for one little tone and then no more! Intermittent tone comes and goes but nothing this morning!