Does it sound better when the window is tightly rolled up or fully down compared to 1/2 way ? ,Sounds like your regulators are rattling , They could just be worn out or in need of a good dose of white lithium grease ? Also check the plastic "rollers" for wear . Another cause of a rattling door would be the support under the vent window is cracked ,Are the gaps along the top of the door edge/glass consistent front to rear ?
