so i was trying to pull my CEL codes. i have a 87 auto ta with 305 4bbl, the cel is on i know one of the codes should be o2 and one should be from the lack of a smog pump, however i want to know exactly what codes are stored, but my 12pin connector only can with pins 1,3,4,5,6. all else are just empty ports. i tried jumpin 5 and 6 with my GM code key but no luck, and jumpin 6 and 12 isnt an option cause i dont have anything in 12 but i tried it anyhow (jus for heck of it) no good. so is there anyway to check my CEL since i cant manually do it? do i like need to pick up one of them obd1 GM code scanners?

 

It should be the upper right two pins, then turn the key on.

 

well that dosnt work for me, maybe my car is a tad bit gay. like not being sarcastic im being serious, im like no rookie at all, however this car is making me feel like one.

 

Does the CEL come on when you turn the key on? ie, does the bulb work?

 

bulb does work, but the light wont flash not even the 12 code. it comes on and just stays steady.

 

Does it come on when you turn the key on but don't start it?

 

yes sir. comes on and stays that way with key in on position not runnin

 

Then it's probably time to start looking at the wiring. You might try reseating the ECM connector. Do you have a voltmeter (not a test light)? You can check for ground on the upper right terminal and 5V or so on the one to the left of it.