P0300 on the 1998 GMC Sonoma
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 3081 | 2004-11-17. Service bulletin. SERVICE ENGINE SOON LIGHT AND P0300 WHEN TOWING, CRUISING UPHILL OR ON HARD ACCELERATION. *TT |
|---|---|
| 00032 | 2000-07-25. Service bulletin. SOME CUSTOMERS MAY EXPERIENCE ILLUMINATION OF THE SERVICE ENGINE SOON (SES) LIGHT AND CODE P0300 (GENERAL MISFIRE), WITH DRIVEABILITY COMPLAINTS OF ENGINE MISFIRE, ROUGH IDLE AND HESITATION. **MR |
2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.