P3055 on GMC vehicles
P3055 is named on 6 GMC model years (2018–2021): 17 manufacturer filings and 0 owner reports in NHTSA’s files, across Sierra, Acadia.
Which GMC model years name P3055
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2020 GMC Sierra | Electrical System | 5 | — |
| 2021 GMC Sierra | Engine | 4 | — |
| 2021 GMC Acadia | Electrical System | 2 | — |
| 2020 GMC Acadia | Engine | 2 | — |
| 2019 GMC Acadia | Engine | 2 | — |
| 2018 GMC Acadia | Engine | 2 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
GMC filings that name P3055
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P3055. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIT5715 Service bulletin2019-10-17 · Electrical System
- This Preliminary Information provides information to the technician about a additional diagnostic tip for a check engine lamp for DTC p3055 and P3056 and the start/Stop being inoperative.
- PIT5715A Service bulletin2021-03-22 · Power Train
- This Preliminary Information provides information to the technician about a additional diagnostic tip for a check engine lamp for DTC P3055 and P3056 and the start/Stop being inoperative.
- PIE0628 Service bulletin2021-04-16 · Electrical System
- This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp illuminated on Driver Information Center (DIC) with DTCs P3055, P3056 Set.
- 21NA139 Service bulletin2021-06-21 · Engine And Engine Cooling — Engine — Engine Control Module (Ecu/Ecm)
- This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
- 21-NA-139 Service bulletin2025-04-02 · Engine
- This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
What P3055 means
Source: SAE J2012 / OBD-IIP3055 is a manufacturer-specific code: the second character is a 3, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. The record above is what GMC and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P3055 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 17 manufacturer filings and 0 owner reports naming P3055 on 6 GMC model years (2018–2021). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which GMC models does P3055 appear on most?
2020 Sierra (5 documents), 2021 Sierra (4 documents), 2021 Acadia (2 documents).
Does P3055 on a GMC mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.