I have done the draw test it is coming From the IGN A fuse. I have disconnected all wires to ignition and still pulling a .18 draw. It doesn't seem to be the switch.
I am having the same issue with me 2003 avalanche. Battery drain over night because the IGN A fuse is pulling 180ma. I have don't all the corrects measurements to get a proper reading. I have pulled the ignition switch, unplugged all wires to ignition assembly. I also disconnected the starter and it still reads a constant (.180a). I have looked for bad wiring and have found nothing. I'm clueless at this point! Can someone give me advice?