Lost Power To accessories

I was working on my 07 tahoe ltz with the lights on and
ignition off when suddenly everything went dark as soon as
i tried to start it....I popped the hood and messed with the
ground wire on the battery and everything came back on
again.But now multiple things are not working, like my
headlight switch,steering wheel buttons,all of the buttons
are none functional on the driverside door, radio stays on,
turn signal not working, brake lights not working, heated
seats not working and driverside power seat not working,
only the passenger side works, oh and also the key fob is
not working, everything was working just fine until it died on
me, please help !!