B0126 on GMC vehicles
B0126 is named on 5 GMC model years (2024–2027): 16 manufacturer filings and 0 owner reports in NHTSA’s files, across Acadia, Yukon, Sierra.
Which GMC model years name B0126
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2024 GMC Acadia | Not specified | 6 | — |
| 2025 GMC Yukon | Not specified | 4 | — |
| 2024 GMC Sierra | Not specified | 3 | — |
| 2027 GMC Yukon | Not specified | 2 | — |
| 2025 GMC Acadia | Not specified | 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 B0126
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names B0126. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIC6556B Service bulletin2024-08-16 · Unknown Or Other
- This Preliminary information communicates to check the drivers monitoring camera for a B1DD0 SYM57 or B0126 SYM82 setting with no other DTCs.
- PIC6556C Service bulletin2024-09-09 · Unknown Or Other
- This Preliminary information communicates to check the drivers monitoring camera for a B1DD0 SYM57 or B0126 SYM82 setting with no other DTCs.
- PIC6556D Service bulletin2024-10-22 · Unknown Or Other
- This Preliminary information communicates to check the drivers monitoring camera for a B1DD0 SYM57 or B0126 SYM82 setting with no other DTCs.
- PIC6556F Service bulletin2024-10-29 · Unknown Or Other
- This Preliminary information communicates to check the drivers monitoring camera for a B1DD0 SYM57 or B0126 SYM82 setting with no other DTCs.
- PIC6556H Service bulletin2025-01-10 · Unknown Or Other
- This Preliminary information communicates to check the drivers monitoring camera for a B1DD0 SYM57 or B0126 SYM82 setting with no other DTCs.
- PIC6556E Service bulletin2024-10-24 · Unknown Or Other
- This Preliminary information communicates to check the drivers monitoring camera for a B1DD0 SYM57 or B0126 SYM82 setting with no other DTCs.
- PIC6663A Service bulletin2026-10-16 · Unknown Or Other
- This PI communicates the possibility of a B1599 and/or B0126 setting and directs to contact TCSC.
What B0126 means
Source: SAE J2012 / OBD-IIB0126 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 B0126 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 16 manufacturer filings and 0 owner reports naming B0126 on 5 GMC model years (2024–2027). 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 B0126 appear on most?
2024 Acadia (6 documents), 2025 Yukon (4 documents), 2024 Sierra (3 documents).
Does B0126 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.