I have a 2000 Oldsmobile Alero that I just bought used, however, there's a few problems. The car runs very well but there's a few inconveniences that I would like fixed. The first problem is the driver's side speaker to the stereo. It works but the sound is very faint. Any reason why this would happen and how I can fix it? The other two things that don't work are the remote mirrors and button to open the trunk. Do I need to change the fuse to these in order for them to work? Thanks in advance. I appreciate it.