1995 Oldsmobile Aurora

I have had small things gradualy going out on my car,
first the electric mirrors then the dome light when you open your door ( just the overhead )
then my drivers seat ( just the forward and back )
now my a/c sometimes the compressor kicks in some times it don't.

check engine lite some times on then off.
had it scanned when on at three differnt places all said ( will not comput ).
chaned brain, checked all fuses, had freon checed,

all good.