Update - things are looking better. I have been doing my homework. I think I am going to be able to get a truck for what I want ($48000 out the door). I ran across this post and it helped me get a good average -
http://www.gm-trucks.com/forums/topic/154033-price-paid/I was going to trade in my truck, but the dealers (without seeing my truck) didn't want to give me what I knew I could get. I listed it last night and have already had 4 people e-mail me/call me. I am in no hurry to sell, so I can wait for a good price.