Does it have a 3.8 or 3.1 in it?If it is the 3.8 series II,upper intake.It is made out of plastic and cracks around the EGR valve port area.It takes in the water next and if you do not get it taken care of in time,car will not start.It fills the lower intake full of water.I have seen this so many times to the point all the spark plugs have to be removed,engine turned over to get the remaining water out of the cylinders and the plugs replaced.Suck out the water out of the lower intake with a wet/dry shop vac.