P0442 on the 1997 GMC T-Series
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.
| 776508 | 1999-12-20. Service bulletin. DTC P0442 CAUSED BY A EVEAP VENT (SOLENOID) VALVE LEAK. *AK |
|---|
1 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.