jclapham

I am having an intermittent issue that while driving down the road, the charge light and security light turn on. When this happens the needles on the Oil Pressure, Fuel and Temperature Gauges move to zero. Also the A/C will turn off and radio volume decreases. When the lights turn off everything returns to normal. I have had the Battery and Alternator check they are ok. Know GM had had trouble with and instrument cluster I had that replaced as well. Any thoughts or help would be appreciated.