I had the same problem a few years ago. The issue on mine was the seam sealer in the wiper/cowl area. It was dried out and cracked.
If this happens to be your issue, read the following...
This is what I did to fix my issue and make it look decent.
I took out all the wiper components to give me plenty of access, then took an old dull wood chisel and started popping the old brittle sealant out. It actually came out pretty easy for me. I removed the sealant as far as it could reach down the drivers and passenger side of the cowl.
After wiping down the area with some prep-solv. I ran some painters tape about 1" away from the seam, both sides so as to leave a nice clean edge once I applied the new sealant. After letting it set up for awhile, I pulled the tape off leaving a clean edge. On each side of the cowl where you don't really see anything, reach in as far as you can spreading the sealant to ensure you have the seam down the sides coated.
Once cured, I then took some paintable undercoating and did just the flat bottom part of the cowl up to under the windshield. Not the forward part where the wiper motor shaft pokes thru. I taped that area off temporarily. Once the undercoating was cured, I removed the tape from the wiper motor area mentioned. Then I took some Dupli color Trim Black and dusted in a few coats in the entire area.
Then reinstalled all the wiper components which I refinished in trim black and lubricated the moving parts in between doing the steps listed above. It was a lot of tedious work, but in the end it took care of the water leak and made that wiper area look good.
Good luck!
|UPDATED|6/25/2012 10:49:00 AM (AZT)|/UPDATED|
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GEN III 5.7L "LS6" Engine swap
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