It has been suggested that when doing electrical work, that the ground cable from the battery be disconnected before doing said work. What, if anything must be re-programmed when the cable is re-connected? 2002 986
I've done this many times ('01S). The only thing I've had to do when re-connecting is to input the radio code. Everything else sorts itself out on its own..
On my 2002 I always have to reset the clock. You might also have to reset the window full up calibration. It's hard to tell if that gets messed or not.