Water Pump replacement difficulty?

My waterpump is leaking on my 2002 express 2500 "R" code engine. How difficult is it to replace it?

You really need to get a Haynes manual and look at what you have to do. If you have all tools it will still take you at lease one half day doing it at home.
Look at the manual it tells you about any special tools needed. The vans are tighter and somewhat harder to work on.
Auto Zone and Advanced have a tool loaner program.

Thanks for the reply. . .yeah I'm gonna need to get the manual. I can't even find the radiator drain plug on this thing!

The G-vans use the "biggest" water pump I have ever seen- Heck when I bought it- I told the counter person- I only wanted one- the box was soooo big.....but other than that it is a piece of cake......