water on passanger floor, and rattling at 2 RPM only, Hummer h3 on 2006 Hummer H3

Have a 2006 hummer h3 I have water on passanger side floor and a rattling at 2 rpm, Will rattle on acceleration at 2 rpm deceleration at rpm and if you hovver at 2 but only at 2

Asked by for the 2006 Hummer H3
Hi. I have the same problem so I was wondering what caused the water in the passenger footwell? Thanks