I was also wondering how to test the PCM to see if that could be it.
GMC Q&AAsk Your Question
2000 GMC Sonoma Question: P0200 and P0300 keep showing, I just replaced the fuel injectors Any Ideas?
Answer #1Tomiko January 30, 2013, 21:02Journeyman
what do the codes mean?
Answer #2Greg's Orange Auto (15380 Answers) , Orange, CA - (714) 361-9386globalhelper January 31, 2013, 09:23Master
which motor do u have? po300 is random misfire and po200 is fuel issue.seek diag and quit wasting money guessing