2006 5.3L PCV & EGR Valves?

[jhacker5150]

Do the 5.3L from 2006 have replaceable PCV and/or EGR valves (or at least with auto store parts replaceable)? I've read mixed things and am hoping someone may have a definitive answer. Thanks!

 

[Jim in AZ]

Similar issue: I have an '06 Yukon XL Denali, 6.0...where is the PCV valve? I've done them before on other vehicles, but this one does not seem to be in the usual place...