Well, the truck passed emissions fine, but the problem reappeared this morning.

I got in it, turned the key and the accessories came one, but nothing else. I turned the key a few times and still got nothing. I called a friend for a ride to work, got back in the truck to get my stuff out and wait for him, then decided to give it a try.

It fired right up.

I drove it the five miles to work, parked it facing downhill, then turned it off. Just for the hell of it, I tried to start it again after I turned it off. Same thing: no ignition, but all of the accessories worked fine.

I'm at my wit's end here, guys. Any ideas at all?