i tried pulling up check codes on the AB terminals and i wont flash or anything, i did everything right. my mechanic couldnt communicate with the computer either, i already swapped the computer. i have a memcal and a Prom, i ordered a stock prom last Friday it should get here very soon, and ill test it and let you know. becuase the car does run, the SES lights up with the key in the on posistion but stays on and doesnt blink. the light stays light during idle. but doesnt flash, or even faintly dim out or super flash, it just stays lit. i checked everything, its elimination down to the Prom. What do you guys think it can be.