mausc

I bought my '98 Z28 with LT headers installed. Obviously the previous owner either cancelled the operation of the rear 02 sensors or pulled the SES light. Now that I've yanked the headers and returned the exhaust to stock, I want to figure out if the ECM is working correctly. I still have no SES light, even at batt-on startup.

Can someone give me an idea of some steps to take to return the system to regular operation?