o2 simulators

i have a 2000 ws-6 and i put o2 simulators on it about 4 years ago because i gutted out the cats and the ses light came on so the simulators helped the light turn off, every now and then the ses light would turn on for about 30 minutes and then it would turn off, but now the ses light has been on for 2 days, could the o2 simulators have gone bad, does anybody know why my ses light is staying on, please guys any ideas, the car runs perfect it doesn't have any problems...i just want that damn ses light to turn off..lol

They very regularly fail. I am suprised that yours lasted the amount of time that they did.

Did you have it scanned for codes? That will tell you what has triggered your SES light. Very well could be the sims.

If you were in PA I would turn it off with my HP Tuners Software. For all 1999 and 2000 f-bodys. Sorry