2003 GMC Envoy sounds like a jet engine when starting

What is your question?

I had the fan clutch replaced because it sounded like a jet engine all the time. Now that it has been replaced it still sounds like a jet engine when you first start it after it has been sitting -- like overnight or all day at work. It only lasts for about a minute then goes back to normal. Is this something to worry about? Did I get a bad fan clutch?