We had our 2007 Outlook with electric liftgate detailed last week. After we got home, we left the doors and lift gate open in the garage for a few days so the carpets could dry. Now, the liftgate is acting erratically! Sometimes the button to close will not work, sometimes the botton (on the exterior latch) works, sometimes when I close it manually, it will not "pull' tight. Sometimes about 5 seconds after I open the hatch, it just closes by itself. AND, I think 2 or 3 times it just opened by itself. It was parked in the garage overnight and this morning, the liftgate was open and the interior lights were on but I don't know how long it had been open. Thoughts?????