what is the easiest way to replace freeze plugs in these vans and is it a common thing for them to rust out. thanks!

 

You know it is 14 yrs old.But before you replace the freeze plugs,you could really clean it and buy a dye kit with a black light to be sure that is what you are seeing.Intake manifold leaks are also common and could lead you to thinking it is a front plug.Water pump leaks are also near the front plugs.Really need to take off the air filter box and top shroud to get a decent look along with taking off the dog house.If you do find a plug leak,do all of the ones short of the ones at the back of the block.Might be a prime time to consider a block heater on the one of the front side ones for the winter.It is a nice accessory to have.As far as a easy way to get to them,like all the rest of freeze plugs on anything else,you just have to take it apart to be able to get to them,poke a hole in them,pry them out,then replace them using sealant.There is a freeze plug driver tool if you like to use,but a proper sized socket will work to drive them back in as well.