Cam and lifter replacement
 

I have a 2003 avalance with the 5.3 and I was told one of my lifters went out by the stealership. They want $4800 to replace the camshaft and hydraulic lifters it but I am a mech and Im going to do it myself. Does anyone have a parts list and any tips?

PS this is my first post. Good to be part of the forum.