P0796 on GMC vehicles Pressure control solenoid C is not holding the pressure it was commanded
P0796 is named on 5 GMC model years (2020–2025): 10 manufacturer filings and 0 owner reports in NHTSA’s files, across Sierra, Canyon, Terrain.
Which GMC model years name P0796
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2020 GMC Sierra | Structure | 4 | — |
| 2025 GMC Terrain | Not specified | 2 | — |
| 2021 GMC Canyon | Power Train | 2 | — |
| 2024 GMC Terrain | Not specified | 1 | — |
| 2020 GMC Canyon | Power Train | 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 P0796
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P0796. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIP5771 Service bulletin2020-12-16 · Structure
- This Preliminary information communicates to the dealer technician to replace the valve body on the 8L90 transmission setting DTC P0796 if no debris is found in the transmission fluid pan. If debris is found in the transmission fluid pan the technician is advised to repair the transmission as need and replace the valve body.
- PIP5771 Service bulletin2020-12-16 · Structure
- This Preliminary information communicates to the dealer technician to replace the valve body on the 8L90 transmission setting DTC P0796 if no debris is found in the transmission fluid pan. If debris is found in the transmission fluid pan the technician is advised to repair the transmission as need and replace the valve body.
- PIP5771B Service bulletin2021-03-01 · Power Train
- This Preliminary information communicates to the dealer technician to replace the valve body on 8 speed transmissions setting DTC P0796 if no debris is found in the transmission fluid pan. If debris is found in the transmission fluid pan the technician is advised to repair the transmission as needed and replace the valve body.
- PIE0645 Service bulletin2021-06-18 · 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 Service Engine Soon Lamp Illuminated on Driver Information Center (DIC), Transmission Not Shifting Properly and/or Slipping, DTC P0796, P2714 Set.
- PIP6010A Service bulletin2025-05-20 · Unknown Or Other
- This Preliminary information communicates Diagnostic information for low mileage vehicles setting a P0796
- PIP6010B Service bulletin2025-07-11 · Unknown Or Other
- This Preliminary information communicates Diagnostic information for low mileage vehicles setting a P0796
What P0796 means
Source: SAE J2012 / OBD-IIPressure control solenoid C is not holding the pressure it was commanded.
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 P0796 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 10 manufacturer filings and 0 owner reports naming P0796 on 5 GMC model years (2020–2025). 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 P0796 appear on most?
2020 Sierra (4 documents), 2021 Canyon (2 documents), 2025 Terrain (2 documents).
Does P0796 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.