Very helpful site. It will tell you exactly how to reset the SRS light. http://www.geocities.com/myintegra96/srs.html
on the battery indicator, it shows the clock battery indicator with the man standing inside the house and he is clear colored. Is this good battery or low battery indicator.
Your 2004 Chevrolet trail blazer and battery light indicator is always on because the battery has sufficient charge.
yes
Your battery is not being charged
To make the battery % indicator show up " just alongside and to the left of the standard battery indicator " just go to Settings > General > Usage " and toggle the Battery Percentage setting to On.
The alternator may be defective.
by changing the alternator
Yes.
No
your alternator is not charging
yes it does
Usually a lightning bolt or a picture of a battery