[kcb37]

You need to check to see what codes you have.
You need to jump the two ternimals on the data connector under the dash, the pic below are of my 89 Camaro, but it's the same connector, and the same terminals.
You can see that I just used a short piece of wire, paper clip works too.
Jump the two terminals, then put the key in, turn it forward to run, do not start.
May take a second, but the engine light will flash. Once it starts to flash start counting. It will flash once, pause, the flash twice. Long pause, then flash once, pause, twice, long pause. That is a code 12. It will flash that 3 times, nothing wrong, just means it's in diagnostic mode, so you can read the codes.
Then say you have a code 24, after code 12 flashes 3 times, their will again be a long pause, then it will flash twice, pause, 4 flashes, long pause, and it will repet two more times.
If 24 is the only code you have it will repeat code 12 to show you that it all your codes. Then it will restart with code 12 again 24, 12.
If you have more then one code it will be something like 12, 24, 32, 44, 12.
If so you would then have a code 24, code 32, and code 44.