I have a GL2way and was experiencing a squeal with the first few transmissions on PTT switch then rest of the day it would work perfectly. Then my right turn signal was not working properly. Turned out to be my left control tower which house cb switches, radio volume,blinker, navi controls ect. Had that replaced and have not heard that squeal again. I hope your squeal is not this because it was about a $1,000.00 fix. My volt meter always shows 14.6-14.8 And when I had the blinker failure it showed 14.1 13.9 with fogs on. With controls changed right back to 14.6-.8
You are hereby officially PROWLER #83.