96 lesabre water leak rear floor

have had some wet snowy weather here in cleveland ohio lately,the other night i noticed the right rear backseat floor was wet when i came home from work,sopped up the water and figured maybe a window was left open,well last night there was a huge puddle of water and im certain all windows were closed.the car has the typical rocker panel rust and im wondering if the highway driving i do with all the wet roads may be letting water in.any suggestions would be appreciated.

wet rear floor 96 lesabre

Check the "eavestrough" around the offending door [black plastic w/chrome on mine] and remove it to see if it is cracked at all. Mine was this summer, and it cost me $200 just for the part! Installation is easy, but don't overtighten anything, or you'll crack your new one and be no further ahead...

Check the wheel tub in front of the rear tire.Mine had a hole there and the corner of the rear seat got wet every time I drove on wet roads. The floor pan also filled with water.

yeah,i think the right rear wheel well is leaking,thanks for the tip!