you may want to wait for it to dry.
The sensor uses capacitance- and not weight to sense if a person is there.
The wetness may have caused a change in capacitance.... though not sure
2010 FWD LT1-Gold Mist Metallic- seats 8
Build Date- July 31, 2009-2nd day of Spring Hill 2010 production.
2013 Equinox 3.6L 83,000
2010 Traverse 3.6L 148,000
2003 Trailblazer 4.2L 181,500