In need of a good truck!

So I currently have a lifted 2008 Chevy Silverado 1500 LTZ Z71 4x4 crew cab. It's absolutely wonderful. The only problem is that it's a $20,000 truck and gets 12 mpg if i'm lucky. I'm also broke as shit lol. It's really just more truck than I need at this point so I'm looking for something smaller. That being said, I am looking for a truck around the $10,000-$15,000 range, needs to be 4x4, have four doors, and be reliable. Oh, and not a Ford lol.

Thanks for all the help guys!