It depends on which engine you have, with or without a supercharger. The non-supercharged engine is a piece of cake. the supercharged one is a bit of a pain to get at the water pump. On the non-supercharged engine, all you need to do is remove the serpentine belt, the water pump pulley and the bolts that hold the water pump to the front cover. I have detailed instructions if you send me your email address I can give them to you. They are from GM Service Information website. I can't give you the link to the website because I have to enter a password to enter the site through work.
