A few months ago I broke the mirror housing of my passenger side mirror on my 99 2-door Tahoe pulling out of the garage one morning. My truck is absolutely perfect without a scratch and it's bothering me. I went to order a used mirror and they are asking me if it is a heated or non-heated mirror. How in the world could you tell the difference from the look? I don't recall it ever icing over in the winter but that doesn't mean much. BTW....the truck has pretty much every option you could get in 1999. Thanks everyone!