OK, so this is what you see when you pull the carpet.
You need to unwrap the connector and take it apart. Then scrub any corrosion off of both sides, put dielectric grease on it, and re-assemble. Then re-wrap it all in a clean nice package. Done.
If you got real wet last summer, corrosion could have been slowly creating this issue. At the very least, you need to eliminate this as a potential cause. Remember that corrosion can and does occur underneath nice neat covers all the time.
Mike: 1997 SE w/ 183K, aka White Horse
, Gutted Airbox w/K&N, drilled 180* t-stat, tint all around, clear corners w/SilverStars, "PONTIAC" light up tail, PEMs, NGK TR55s