issue with shaking headlights

I have a 01 grand prix gt 3.8 n/s the headlights shake like crazy and they are brand new/ OEM not ebay stuff any ideas they are adjusted right and the slots are inside the hole what else can it be you close the hood and can walk up to the headlight and they move up and down on their own realy freely. thanks for the info

hmmm, my pair of ebay headlights will be arriving on wednesday. cant wait to see how they perform....
(as long as they point straight, they'll be a step ahead of what i have now)

I had the same problem with my headlights. Theres a screw that holds the headlight in the bracket and u have to make sure the screw is screwed in the headlight. So I would take the screw out thats near the top left of the headlight and screw it back in but while at the same time hold the headlight up while screwing the screw in.