data link connector

Trying to program keyless entry for 1999 buick lesabre understood all of the directions but I need to know where the dlc is located
please help thanks

It should be located below the base of your steering column on the cover for under side of your dashboard. That's where mine is located on my 95 LeSabre. It's black, so it blends in well, and it is far enough back that you don't notice it if you don't get all the way under there. Try laying upside down in your drivers seat and putting your head on the brake pedal, it should be right on your nose. LOL Hope it's in the same place as mine! -C