[john d]

Information in the shop manual describes it for the 6 & 8 but doesn't give location or service interval simply stating it's hose connects to the intake body.
Might go to the dealers parts dept asking the price and look at their computer picture that may show it's location.
Thoughts: ask service dept for the printed list of required service items and when needed to keep warranty in effect. Also, if you or others (Sears, Jiffy Lube, etc)do the work what proof do you need to keep..get that in writing too.
Might shop dealers for prices too...that sounds way out of line.
Had an Olds and PCV was out of sight under the intake manifold.