every now and then

[drew peacock]

yo guys,
wonder if any of you can help me?
in the last week twice when starting the display says something like. headlight leveling system malfunction go to dealer.
now i have checked the lights and they do seem to self adjust..the warning only has happened twice.
just been to my local chevy dealer and my car is still under garantee untill next april..only problem i got is winter is setting here now and they cant see my car untill the end of october..the garantee expires end of april..
anyone have any ideas why this is coming up every now and then?

cheers drew