Here's what’s going on. Both of my O2 sensors on my '96 Sierra have finally gone bad (they are throwing codes). I'd like to find a pair of MIL eliminators/O2 simulators because I plan on doing headers and an offroad Y on it in the near future, so I'd need the MIL eliminators for the future anyway. The only problem I am encountering is I can only seem to find them for Ford vehicles like this http://www.americanmuscle.com/stmilel.html . Is there a reason why I can't find them for OBDII GM trucks?