P003A on the 2006 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.
| 06-06-01-007I | 2017-12-22. Service bulletin. This informational bulletin provides information to dealership personnel on identifying Duramax Diesel overpower engine breakdown or non-function due to aftermarket power-up devices vs. non overpower engine non-function of pistons, cylinders, valve train components, and DTC P003A or P111D set. |
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| 06-06-01-007G | 2017-10-12. Service bulletin. This informational bulletin provides Information on Identifying Duramax Diesel Overpower Engine Breakdown/Non-Function Due to Aftermarket Power-Up Devices vs Non Overpower Engine Non-Function of Pistons, Cylinders, Valvetrain Components, DTC P003A or P111D Set |
| PIP-4629 | 2009-08-19. Service bulletin. CHEVROLET/GMC: DIESEL ENGINE TURBO DTC P2563 OR P003A. MAY ENCOUNTER A CONCERN OF SES LIGHT, REDUCED POWER, LOW POWER. *PE |
| 060604066 | 2007-03-05. Service bulletin. LBZ, LLY, ENGINE WITH ROUGH IDLE, POOR PERFORMANCE, BLACK/WHITE EXHAUST SMOKE, MIL/SES LIGHT ON AND ONE OR MORE OF THE FOLLOWING DTC'S P003A, P060B, P0230, P0403, P0401, P0606, P2146, P2149, P2152, P2155. (REPROGRAM ECM AND REPLACE EGR MOTOR OR EGR VALVE. *KB UPDATED 04-27-07. *KB UPDATED. *PE |
4 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.