On the 2004 4-door Alero (cannot vouch for any other year or body type) the driver's door switch is integral to the door-lock mechanism. You must remove the door panel to access this mechanism.
it shuts off when you open the driver side door....
How do you remove the driver door panel on a 2002 Cadillac deville?
look at the data/spec decal on the inside of the driver's door post.
How do you remove the driver door panel on a 2002 Cadillac deville?
inside the door is a plastic piece that often breaks, that is what holds it up and its probably broken.
open fuse box on inside of driver door at the top there is a red button while car is switched on not running press and hold button down for about 10 seconds this should reset it
On the left side (driver side) in the frame about driver door.
Yes, the Speaker is in the door.
How do I take the back panel off
Listed in your owner's manual and on the driver's door post.
Look on the driver door for a label near the latch with the door open.