P138C on the 2024 Chevrolet Tahoe
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.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| PIP5965A | 2024-08-13. Service bulletin. This Preliminary information communicates to technicians that a calibration to correct a P138C is forthcoming and to not attempt repairs. |
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| PIP5965 | 2024-03-18. Service bulletin. This Preliminary information communicates to technicians that a calibration to correct a P138C is forthcoming and to not attempt repairs. |
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.