STKClutch

Only when i pull one of the plugs out... theres corrosion y and what can i do about it?

Casper98GT

Water gets on youre engine, you can do anything about it. Its not hurting anytihng either.

STKClutch

the thing that concerns me is that its under only one plug on the pack

96SilverLT1

Clean it out with some electrical contact cleaner and a brush. You can use a little di-electric grease on it to prevent it from happening. The corosion can lead to high resistence to the spark. You might expirence a lag or miss under a heavy load.