P0700 on GMC vehicles The transmission control module is asking for the warning light — the real code is stored on its side
P0700 is named on 7 GMC model years (2023–2025): 5 manufacturer filings and 11 owner reports in NHTSA’s files, across Sierra, Sierra 2500HD, Sierra 3500HD, Canyon, Terrain.
Which GMC model years name P0700
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2023 GMC Sierra | Power Train | 2 | 3 |
| 2023 GMC Sierra 2500HD | Electrical System | 1 | 2 |
| 2023 GMC Sierra 3500HD | Power Train | 1 | 2 |
| 2024 GMC Sierra 2500HD | Power Train | — | 2 |
| 2025 GMC Sierra 3500HD | Forward Collision Avoidance | — | 1 |
| 2024 GMC Canyon | Electrical System | 1 | — |
| 2024 GMC Terrain | 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 P0700
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P0700. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 23-NA-210 Service bulletin2023-11-27 · Power Train
- This bulletin provides a procedure to perform a diagnostic check to verify if DTCs P18AE and/or P0700 Set returns when reset and to clear the codes and validate code does not set again.
- 23-NA-210 Service bulletin2024-09-11 · Power Train
- This bulletin provides a procedure to perform a diagnostic check to verify if DTCs P18AE and/or P0700 Set returns when reset and to clear the codes and validate code does not set again.
- 24-NA-124 Service bulletin2024-07-10 · Electrical System
- This technical bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp Illuminated, Stall, or No Start with DTC P2534, U3023, P0700, P129D, P10DB (w/ L5P Diesel), P103B, P17E0.
- 24-NA-172 Service bulletin2024-08-27 · Electrical System
- This technical bulletin provides a procedure to correct the condition of Intermittent No Power or Vehicle will Hesitate DTC P0700, P0EFF, U1611, U0401.
What P0700 means
Source: SAE J2012 / OBD-IIThe transmission control module is asking for the warning light — the real code is stored on its side.
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 P0700 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 5 manufacturer filings and 11 owner reports naming P0700 on 7 GMC model years (2023–2025). 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 P0700 appear on most?
2023 Sierra (5 documents), 2023 Sierra 2500HD (3 documents), 2023 Sierra 3500HD (3 documents).
Does P0700 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.