How the heck I lost it and spent a half hour searching my truck and my apartment for it. But I did. It was in my pocket, and it's not like it's a socket or something small like a nut.

Those headlight bulbs don't last a long time on the Silverados. I think I get 3-5 years out of them on average before I end up changing them. It's not a difficult job but it's still annoying to have to do it after a very dark drive home -- you don't realize how crap the light is out of only one headlight. Plus, I bet the other headlight is far below it's peak brightness, and I got two bulbs but I haven't replaced the other side yet.

I was as careful as possible not to touch the bulb while replacing it, but I concede these halogens don't last forever, so it probably won't be long until I have to replace the other side. So I have a spare one in my kitchen ready to go. It's fine Walmart didn't have the one pack or the cheapest bulb. I spent $25 rather then $10 on one bulb. Maybe the color or brightness is a bit better on the more expensive bulb, not that I drive that much after dark.

It would definately be a lot easier job if I didn't have to pull the accessory battery to replace the bulb but it's not that big of deal one way or the other.

Wasn't bad at all, took 15 minutes. Quicker than if I drove it to the shop. I got to get a new air filter, maybe next weekend. I'll have the shop rotate the tires when I'm getting the inspection done in December.