Quite possibly, yes. But so could about four dozen other things.
The Intake gasket is leaking, NOT THE HEAD GASKET. Replace the intake gasket
sounds like it might be head gasket or intake gasket
Any internal coolant leak can cause a milky residue in the valve cover. Head gasket, intake gasket, cracked/warped head, cracked intake are possible causes.
If the leak is bad enough i believe it can but i would check your valve cover gasket first.
Yes. If an intake manifold gasket was not installed properly or has somehow become damaged the engine will pull air through the opening.
leaking intake gasket. gm is notorious for them
the answer is yes
Yes. Antifreeze is actually pumped through the intake manifold. If the gasket is bad it is possible that it leaks out
It could be multiple problems. check your coolant level, it could also be your Lower intake gasket or even a head gasket.
That would probably cause it to run lean.
Vacuum leak or blown intake gasket.
that would be a head gasket