I don't have the direct answer but I just had to replace mine. I went to my local auto parts store and bought a Haynes repair manual for $21 and it gave me step by step directions on how to replace the gasket. Seams like a tough job but its really not that hard, just remember were the bolts go and to clean everything before reassembling.
The head gasket on a 1999 Chevy Malibu is replaced by removing the coolant, intake manifold, and retaining bolts. The cylinder head can then be removed, the gasket replaced, and everything reassembled.
there is no lower intake gasket, only a front and rear gasket
It is between $65-$85 for the gaskets.
They only Head Gasket I had to replace was on a Chevy Malibu 1999. Cost me about $1400
Intake manifold gasket
I'm sorry but i actually have a 99 Malibu and they do have a intake manifold gasket which are commonly mistaken for a head gasket when it blows. Mailbu's 97 to 2000 are bad for them blowing. it is located on top of the engine. it's still very expensive **tamnesha Some Chevy engines of that period didn't have a gasket; just a thin film of sealant.
Remove the intake manifold retaining bolts from your 1996 Chevy Astro Van. Remove the manifold gasket and clean the surface. Reverse the process to install the new intake manifold gasket.
go to a parts store and get a haynes manual for your car year and model!! it will describe what to do step by step!! Just did mine!!
The labor charge to replace and intake manifold gasket, on a 1999 Chevrolet Tahoe, is approximately $180. It takes approximately 2 1/2 hours to replace the gasket.
to replace the intake gasket would be about 4 hours labor. parts would run about $50
The intake manifold are very bad about corroding a hole in them which means that you will have to replace it
if you are going to replace the intake gasket you might as well change the head gaskets at the same time[it will cost you a little now but save you a lot later