I've had my SES light coming on for a while now, but it never really effected anything, but lately it started popping on sooner and sooner. I checked them and this is what I got.

12: No reference pulses to Electronic Control Module (ECM)
22: Low voltage at throttle positon sensor OR Fuel cutoff relay circuit open or shorted to ground
32: Fault in barometric pressure sensor circuit OR Fault in exhaust gas recirculation valve diagnostic switch OR Fault in electronic vacuum regulator valve
33: High voltage (low vacuum) at mass air flow sensor (or MAP sensor)
42: Fault at electronic spark timing circuit OR Fault at direct ignition system OR Fault at fuel cutoff relay circuit

Now I really don't know what all this means, or how to go about fixing the problems. The TPS and IAC were just set about a week ago.

Some background - I just had my motor put in on the 4th of November. With that he put in 24lb injectors and a chip he said he had to order from GM.

 

12.. normal if the car isn't running (no tach signal)
22.. Low TPS voltage.. Voltage is under the .54v +/- .08v range
32.. EGR system malfunction, no or
33.. MAF, Bosch... will set when the ECm has seen a signal from the MAF indicating an airflow greater than 45gps when the engine is first started, or TPS is less than throttle and rpm is less than 2000.
42 Electronic timing control problem, no or. (will set if the connector, tan/blkstripe wire, is left unplugged after setting the base timing)
May not help but.. that's what the codes are.