I just bought an 88 iroc 305 tpI, cheap money. it had no ses bulb in it. i installed 1 and tried to pull codes by jumping the a and b pins. no flashes nothing. light on solid. at first i thought maybe no ground to the pcm. but the light stays on with key on and when started light goes out. well now the light comes on when the car is running which means i have a code and or problem, but i still cannont jump the a/b terminals to pull the codes. just wandering if you guys have seen this and any ideas? I will try a scanner once it is returned to the shop but i want to get into the diag state to at least see what the codes are and try and fix this buggy!!!!

 

thanks guys, got it figure out. thanks for all the help.