Ambiguous title I know, but there really are a lot of questions.
First off, How do I get the front door panels off my truck? I'm trying to get to the speakers, but the DIY mod on this site doesn't explain how to deal with manual windows. It wasn't intuitively obvious how to do it, and I didn't want to break anything.
Second, how do I tell if I have a locking differential? My truck is only 2 wheel drive, but I want to learn about how it will handle in snow and mud.
Where can I buy tire chains in Arizona? I'm planning a small trip into the mountains this winter, and I want to have some chains because that seems like the sensible thing to do.
Lastly, any advice on driving a 2x4 in the snow? Obviously I can't go flying around corners or push through anything substantially deep, but I should be fine on main roads, right?