How do I adjust the headlights on '02 milly? there are holes but i can't seem to find the gears for the low beams...found the gears for the highs...and if rusted is it ok to use pb blaster on them? Thanx

 

mine's an 01, i think your's the same, here's how i did mine
look in the back of the low beam light fixture, there's a slot that you can use a phillip screw driver to turn the adjustment, turn left will bring it up, turn right to bring it down, if it seized up then there is a 10mm bolt in there that you can use for the adjustment as well,

 

Ok...but will that move the lows up/down orleft/right cuz they need to left towards center road...thanks for the help