P0606 on the 2019 GMC Sierra
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.
| 20NA073 | 2020-10-26. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Loss of Brake Assist, Various Messages Displayed in Driver Information Center (DIC), Brake Pedal Travel and Apply May Feel Different, One or More of the Following DTCs May be Set: P0606 with C0021, C05D2, C0595, C2A3B, C0024, C053D, P25A2. |
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| PIT5728D | 2020-03-09. Service bulletin. This Preliminary information communicates an issue with DTC P0606 and C0021 setting after completing campaign N192268090 and advises to reprogram the BSCM with updated calibrations available in Tis2Web. |
| PIT5728C | 2020-02-10. Service bulletin. This Preliminary information communicates an issue with DTC P0606 and C0021 setting after completing campaign N192268090 and advises to reprogram the BSCM with updated calibrations available in Tis2Web. |
| PIT5728B | 2020-02-10. Service bulletin. This Preliminary information communicates an issue with DTC P0606 and C0021 setting after completing campaign N192268090 and advises to reprogram the BSCM with updated calibrations available in Tis2Web. |
| PIT5728A | 2020-02-10. Service bulletin. This Preliminary information communicates an issue with DTC P0606 and C0021 setting after completing campaign N192268090 and it provides information about using and maintaining proper battery voltage while programming the BSCM. |
| PIT5728 | 2020-01-21. Service bulletin. This Preliminary information communicates an issue with DTC P0606 and C0021 setting after completing campaign N192268090 and it provides information about using and maintaining proper battery voltage while programming the BSCM. |
| PIT5634 | 2018-12-17. Service bulletin. This Preliminary information communicates and issue with a customer concern of a SES MIL, Reduced Engine Power, Service Brake System, and/or Speed Limited message, a lack of brake assist making the brake pedal hard and DTC P0606. These issues can be caused by a low voltage conditions, but the EBCM incorrectly sets a DTC P0606 for a Control Module Processor Performance error. If the SI diagnostics are followed for DTC P0606 it can lead to a misdiagnosis and an incorrect repair. Dealers are advised to inspect for a low voltage condition and follow SI diagnostics for DTC P0562 "System Voltage Low". Engineering is trying to determine next steps in the resolution of this issue. It will likely be an update to SI or a change to the EBCM Calibration or both. |
| PIT5634 | 2018-11-13. Service bulletin. This Preliminary information communicates and issue with acustomer concern of a SES MIL, Reduced Engine Power, Service Brake System, and/orSpeed Limited message,a lack of brake assist making the brake pedal hard andDTCP0606. These issues can be caused by a low voltage conditions, but the EBCM incorrectly sets a DTC P0606 for aControl Module Processor Performance error. If the SI diagnostics are followed for DTC P0606 it can leadto amisdiagnosis and an incorrect repair. Dealers are advised to inspect for a low voltage condition and follow SI diagnostics forDTC P0562 "System Voltage Low". Engineering is trying to determine next steps in the resolution of this issue. It will likely be an update to SI or a change to the EBCM Calibration or both. |
8 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.