Tell the best way to replace the rear valve cover gasket. Thanks

 

Tell?
Take everything out..change the gasket..put everything back in.

 

Remove valve cover, replace gasket... There is no other way.....

 

Purchase a chilton or hayes manual for your car ( you can find them at most auto parts stores ). It will show you the steps that you need to take. It's not very hard, but plan on taking the better part of the day to do this.

It's also a good time to consider replacing the spark plugs if it is close to time to replace. It is much easier to replace the rear plugs when you have it all apart.

 

you have to remove the intake plenum...
while youre at it, id also replace the spark plugs for the rear bank and the intake plenum gasket since everything will be out anyway