P0746 on GMC vehicles
P0746 is named on 6 GMC model years (2020–2024): 17 manufacturer filings and 0 owner reports in NHTSA’s files, across Terrain, Acadia.
Which GMC model years name P0746
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2024 GMC Terrain | Power Train | 5 | — |
| 2024 GMC Acadia | Power Train | 4 | — |
| 2021 GMC Acadia | Power Train | 2 | — |
| 2021 GMC Terrain | Power Train | 2 | — |
| 2020 GMC Acadia | Power Train | 2 | — |
| 2020 GMC Terrain | Power Train | 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 P0746
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P0746. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIP5974A Service bulletin2024-08-13 · Power Train
- This Preliminary information communicates possible transmission 1-2-3-4-5-6 snap rings out of round causing code p0746 or p0747.
- PIP5974B Service bulletin2024-08-13 · Power Train
- This Preliminary information communicates possible transmission 1-2-3-4-5-6 snap rings out of round causing code p0746 or p0747.
- PIP5974C Service bulletin2024-09-04 · Power Train
- This Preliminary information communicates possible transmission 1-2-3-4-5-6 snap rings out of round causing code p0746 or p0747.
- PIP5974D Service bulletin2024-09-14 · Power Train
- This Preliminary information communicates possible transmission 1-2-3-4-5-6 snap rings out of round causing code p0746 or p0747.
- PIE0720 Service bulletin2022-10-05 · Power Train
- This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Vehicle Will Not Move When in Drive, Neutral and/or Reverse and DTCs P0746, P0747 Set.
- PIE0720A Service bulletin2022-11-22 · Power Train
- This engineering information (EI) closure ends the need to gather further information from technicians in regards to Vehicle Will Not Move When in Drive, Neutral and/or Reverse and DTCs P0746, P0747 Set.
What P0746 means
Source: SAE J2012 / OBD-IIP0746 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
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 P0746 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 17 manufacturer filings and 0 owner reports naming P0746 on 6 GMC model years (2020–2024). 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 P0746 appear on most?
2024 Terrain (5 documents), 2024 Acadia (4 documents), 2021 Acadia (2 documents).
Does P0746 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.