On new 2011 buick regal cxl sd - within 2 days of purchase (70 miles) - while parked, engine on or off, front passenger door could not be opened from the inside. could only be opened from the outside. door handle latch was not properly closing. the other 2 passenger doors were beginning to show the same symptoms. dealer ordered 3 new handle sets to be installed o/a jan 8,2011. *tr