Check the door hinges to be sure that they aren't worn out. With the door open you should not be able to move the door up and down (if you can it'll feel relatively loose).
If hinges are OK, wiggle the door latch to see if you can hear noise. If so, you may have to remove the door panel to see what's loose. (Good idea to drive it with door panel off to allow you to locate problem, if necessary).
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Sunday, June 1st, 2014 AT 6:49 AM