I have a 2008 Saturn Aura, and I wonder if anyone could help me
with diagnostics?  SYMPTOMS: The lock button on the driver's
door that is supposed to lock and unlock all the doors only
works on the driver's door itself. The other locks move a little
and try to lock or unlock, but they don't seem to get enough
power. There's a faint clicking noise in the AC when it's on.
Sometimes the speakers on the radio get quiet and scratchy, but
most of the time they work properly. The transmission sometimes
shifts hard and/or late. Sometimes the transmission can't figure
out which gear it wants when cruising at approximately 40mph, so
it shifts back and forth more often than it should. The engine
seems to have a slight murmur when idling. I've checked the
alternator. I've checked the battery for corrosion. QUESTION:
Could all of these symptoms be related to a short in the
electric system? Is it more likely each symptom is an
independent problem? Does it seem like the transmission itself
has a problem, or does it seem ele