P0305 on GMC vehicles Cylinder 5 is misfiring
P0305 is named on 5 GMC model years (2018–2022): 5 manufacturer filings and 0 owner reports in NHTSA’s files, across Acadia, Canyon.
Which GMC model years name P0305
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2022 GMC Canyon | Engine | 1 | — |
| 2021 GMC Canyon | Electrical System | 1 | — |
| 2020 GMC Canyon | Engine | 1 | — |
| 2018 GMC Acadia | Electrical System | 1 | — |
| 2018 GMC Canyon | Engine | 1 | — |
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 P0305
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P0305. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 21-NA-036 Service bulletin2022-03-11 · Electrical System
- This service bulletin advises the technician of a diagnostic test for a possible issue with a damaged OCV solenoid that may cause an oil leak and misfire, illuminating the MIL and setting DTCs P0300, P0302 and/or P0305.
What P0305 means
Source: SAE J2012 / OBD-IICylinder 5 is misfiring.
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 P0305 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 5 manufacturer filings and 0 owner reports naming P0305 on 5 GMC model years (2018–2022). 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 P0305 appear on most?
2018 Acadia (1 document), 2022 Canyon (1 document), 2021 Canyon (1 document).
Does P0305 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.