2005 Chevy Trailblazer I'm thinking "lemon"!

Hi,

I've had so many problems with this car, I don't know where to start. If you don't mind, I'd like to submit a couple now, rather than just one, cause I dont know where to start
:
SIR coil (I'm told) is out, so my "airbag" light is on in my console, and apparently I really don't have an airbag (per dealership mechanic). Why'd this happen (as in, is it happening with other trailblazers, like the speedometer going out -just had the dealership fix that for about $400 dollars) or is it a fluke, or does it really just sometimes "happen". What's my best and cheapest option for having it fixed? (As in, what are my options other than going to the dealership?)

System maintenance/problem light always stays on. I've tried tightening and replacing the gas cap, and the guys at Auto Zone cant get their little plug in analysis gadget to acknowledge that there even is a problem. Could it be just a problem with the indicater light being stuck in "on" position, or do you know what else I can try?

I've dropped a very important key between the passenger sead and the console, and then it was inadvertently pushed up under the full one-piece console itself. Is there a way to pop that whole console out to get what's under it?

Passenger side electric window has quit working. Any ideas for me to try before I go back and let the dealership rape me again?

Fan/blower started blowing one day and then just wouldn't shut off. At the back, in the side panels beside the 3rd seats, are fans that are just going and going. Because this was draining my battery, a friend popped open the panels and pulled the fuses to make the fans stop, which worked, but I'd like to actually fix them.

Thank you for any help and/or advice you can give me with this nightmare car!

Wendy