one of 2 things to look for (I had the same problem), the christmas trees on the top lip of the bumper cover (by the hood latch), if there there then they are fine. Now the other... you've got 3 main parts to your front bumper.
1) bumper cover, 2) actual bumper, 3) 2 bumper insulators (look like shocks to me.
If its lowered that much and the trees are fine then either you were in a small fender bender and the shocks have been compressed a little bit, or another off chance is that the actual bumper is sagging. either one of these requires some effort to fix.
If you want details let me know, i had a minor bump last year and propped a grand am off its rear tires (um... oops). I had to put my SHO on a frame rack to pull it out but it looks almost brand new now (minus a chip in the paint).
Also a good time to take a good look at your radiator, replace if neccessary. or replace those useless factory fogs with some Pilots, of Blazers!
