I recently had my 2004 Z71 Avalanche experience a problem with the instrument panel. The electrical charging gauge was pegged past the upper limit of 19 volts. Once on an analyzer it was assured that my charging system was fine but I was told that the gauge was bad and I had to replace it. Has anyone had this problem? Does anyone know where I can find a used or original replacement cluster? The dealer price is unbelievable. any help is appreciated. Have searched a little on line tonight with no luck.