P3055
2 owner reports and 108 manufacturer filings across 46 model years from Buick, Cadillac, Chevrolet, GMC.
Where P3055 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2020 Chevrolet Silverado | Electrical System | 5 | — | Battery → |
| 2020 GMC Sierra | Electrical System | 5 | — | Battery → |
| 2021 Chevrolet Silverado | Engine | 4 | — | |
| 2021 GMC Sierra | Engine | 4 | — | |
| 2018 Buick LaCrosse | Equipment | 3 | — | |
| 2017 Buick LaCrosse | Equipment | 3 | — | |
| 2020 Buick Regal | Engine | 3 | — | |
| 2018 Buick Regal | Engine | 3 | — | |
| 2021 Chevrolet Blazer | Exterior Lighting | 3 | — | Headlight assembly → |
| 2020 Chevrolet Blazer | Engine | 3 | — | |
| 2020 Chevrolet Equinox | Exterior Lighting | 2 | 1 | Headlight assembly → |
| 2020 Chevrolet Traverse | Engine | 2 | 1 | |
| 2021 Buick Enclave | Engine | 2 | — | |
| 2020 Buick Enclave | Electrical System | 2 | — | Battery → |
| 2019 Buick Enclave | Engine | 2 | — | |
| 2018 Buick Enclave | Engine | 2 | — | |
| 2017 Buick Enclave | Engine | 2 | — | |
| 2019 Buick LaCrosse | Engine | 2 | — | |
| 2019 Buick Regal | Electrical System | 2 | — | Battery → |
| 2019 Cadillac CT6 | Electrical System | 2 | — | Battery → |
| 2018 Cadillac CT6 | Engine | 2 | — | |
| 2021 Cadillac XT4 | Engine | 2 | — | |
| 2020 Cadillac XT4 | Electrical System | 2 | — | Battery → |
| 2019 Cadillac XT4 | Engine | 2 | — | |
| 2021 Cadillac XT5 | Electrical System | 2 | — | Battery → |
Showing the 25 model years where P3055 appears most; it is on file for 46 in total.
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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P3055 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P3055 on that maker’s vehicles.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
on morning start-up there's an absurd amount of exhaust coming into the cabin area, the codes [P3055 and P3056] are registered from the computer of vehicle
108 manufacturer filings name P3055. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P3055.
- 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.
- 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.
- PIE0628 Service bulletin2021-04-16 · Exterior Lighting
- 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.
- 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.
- 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.
- 17NA399 Service bulletin2017-12-15 · Equipment — Appliance — Air Conditioner
- This technical bulletin provides a procedure to clean out the HVAC drain hose if a vehicle has a condition of Front Carpet Wet and/or Musty Smell with Possible DTC P3055 or P3056 due to the water coming inside.
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. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P3055
Source: NHTSA files and the OBD-II standardWhy does this page not define P3055?
Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.
Can I keep driving with P3055 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.