I have an '87 K5 with TBI 350. Last night my motor died and the check engine light came on, then the truck restarted itself (it was still coasting down from about 65) and the check engine light turned back off. My truck has been acting up alot lately and I have made many other posts about these problems. My question now is, where is the part of the computer that I can do the "paper clip" check for trouble codes at? And, will the codes still show even after the engine has been restarted and the light has gone off. I'm pretty sure that I understand the whole bridging ports A & B, and then watching the check engine light flash thing, but where is the computer actually at? Please help, this is my daily driver and it hasn't been too reliable lately.