electrical problem 2001 chevy suburban

The power window switch on my grandfather suburban was only working half the time so i found it easy to swap the driver switch with the working rear pass. switch. I dissconnected those connections at the back of the door control panel but the panel still had power go figure! it was getting power from the power mirror connection then i here a weird arcing sound so i reconnect the panel and turn the ignition and now the truck won't turn on. At first the dash panel lit up and made a clunking sound at the starter. Now it just acts normal but doesn't turn on and none of the windows work.The Suburban is off topic here but I figured somebody here would probably know.Thanks.

Did you run the battery down ?

Start by checking all the fuses.

Start by blowing up the Suburban.

My boss had (sold last year) a 2002 Suburban that had over $10,000 worth of warranty work done in the first 6 months of ownership (he traded in an APR-tuned '01 A4 1.8T on it for his wife). It blew up headlight bulbs weekly on top of that. Hopefully your grandpa's doesn't have the barndoor tailgate; it'll be made of rust in a year if it isn't already.

GM sucks.