I am having the same problem with my 2002 SS. Front lighter is dead, rear works fine. NOT a fuse. started tracing wire last night, but wanted to get others opinion, before continuing on...

 

The issue WAS a fuse on the passenger side of the car. Rear cigarette lighter is a 10 amp on the driver side, the Front cigarette lighter was a 15 amp located on the passenger side...Thanks to a thread where "Micky" chimed in. I do not know why GM would have the fuses on separate sides of the car...

 

I replaced the fuse and instahled a new one from advance auto.....
When mine went out....that was 4 yrs ago...still works great ! Good luck..hope this helped..

 

When mine quit...i checked the fuse ..it was blown..replaced it and it poped again....so i went to advance auto parts bought a new cigarette lighter and holder.....instahled it and replaced the fuse....problem solved..

That was 4yrs ago and still works fine.....hope this helps good luck!

 

Yeah I blew a cigarette lighter fuse once due to a crappy phone charger, and it had me stumped for a long time cuz the rear cigarette lighter worked, and the front didn't and the drivers side fuse wasn't blown. I didn't realize there were fuse panels on both sides of the car. LOL. That was an easy fix. But the auxiliary ports do wear out and break from time to time and you have to replace them. Try replacing it first. Should only be two wires....