First, you'll need the gaskets. These include the upper and lower intake gaskets, as well as the valve cover gaskets. You'll also need a 1 1/16" wrench to remove the EGR nut located on the driver's side of the block. Start by marking all electrical connections, plugs, etc. with a grease marker. Next, remove the alternator, radiator hoses, and cold air intake. You'll also have to unbolt the throttle bracket that hold the throttle lines in place. Then, remove the upper intake manifold by unbolting all six bolts that hold it in place. You will more than likely have to unbolt the AC compressor and move it forward, because you'll need the room. Make sure to remove the coil pack bracket located on the passenger's side of the block, too. Now comes the fun (actually, not so fun) part. Unbolt both fuel lines and unclip all the fuel injector sensors (be sure to mark their locations). Next, remove the valve covers. Then, remove the lower intake. It is not necessary to remove the fuel rail. To replace the gaskets on all parts, make sure to scrape the block and lower intake to remove all old gasket material. Also, stuff some shop rags into the lower intake ports (in the engine block) to stop any gasket debris from entering the engine. Then, simply replace to gaskets (drop some ORV sealant on all four corners for lower intake mating surface) and put everything back together. Be very careful with the sensor clips, though. They're extremely brittle and will break without much force.
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
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.
Elmo is cool
there is no lower intake gasket, only a front and rear gasket
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.
alero intake manifold torque specs
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