Keith, I was going t send you a PM on this, thanks for posting the facts. Definitely a rare find these days. I saw the badge, then noticed the tailgate letters are the same as Avalanches which utilize some "Pro-Tec". Didn't know their tailgates weren't steel skinned. Got to looking closer and noticed the bedliner was molded in with bedsides. That's when I went to the wheel opening and felt thick material with no rolled edge. Then I started knocking and thumping on the side and he ran me off!
He didn't realize anything special about it. He bought it when it was a couple years old, still has it. It's been ten or more years and I still have never seen another... and lord knows I look at trucks!
I did tell him watch backing into anything and hope no one smacks into him. I guess he'd be looking at a bed replacement if anything bad happened