P2101 on the 2018 GMC Yukon XL
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.
| 18NA037 | 2019-04-22. Service bulletin. This Bulletin provides ECM reprogramming information to Correct DTC P2101. |
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| 18NA037 | 2018-05-21. Service bulletin. This Bulletin provides ECM reprogramming information to Correct DTC P2101. |
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.