P0300 on the 1997 Chevrolet Express
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 |
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| 00149D | 2004-02-27. Service bulletin. MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE. VARIOUS MODELS INCLUDING 1996 - 1999 P32 MODELS. SIT BULLETIN 1416475. *TT |
| 00149C | 2003-11-22. Service bulletin. MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE. VARIOUS MODELS INCLUDING THE 1996-1999 P32 AND THE 1996-2002 GMC C/K TRUCK. *TT |
3 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.