pressure under cam cover

How about a plugged PCV system? Otherwise, it could be due to excessive blow-by from the pistons. I think a cracked head or leaking head gasket would pressurize the cooling system, not usually the crankcase. Be sure that there isn't coolant in the oil, it'll look opaque brown if there's coolant in it. If you want to find a Saturn specialist, here's our directory link for you: https://repairpal.com/saturn-repair-in-strafford-new-hampshire