You have to take the block off and get to it first...I have a Chevy K1500 Z71 and I had to replace it but I had help....
The block is the lower part of the engine and has nothing to do with the intake gaskets. Go to a parts house or bookstore and buy a Haynes Manual and it will give you everything you need to know.
Yes, you must install a new intake manifold gasket.
Replace gasket why does gasket keep sliding
The only fix for a bad intake gasket is to remove the intake manifold and replace the gasket.
No. which manifold gasket are you wanting to replace? Intake or exhaust?
around 6-7 hours according to AllData
Elmo is cool
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.
Pretty straight forward. You must remove the intake manifold in order to replace the gasket.
there is no lower intake gasket, only a front and rear gasket
remove the air filter pan assembly and the 15-20 intake bolts clean gasket area replace n re bolt down
alero intake manifold torque specs