P1098 on GMC vehicles
P1098 is named on 5 GMC model years (2020–2023): 11 manufacturer filings and 22 owner reports in NHTSA’s files, across Sierra, Acadia.
Which GMC model years name P1098
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2021 GMC Sierra | Engine | — | 11 |
| 2023 GMC Sierra | Engine | — | 6 |
| 2020 GMC Acadia | Electrical System | 6 | — |
| 2022 GMC Sierra | Power Train | — | 5 |
| 2020 GMC Sierra | Electrical System | 5 | — |
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.
What GMC owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.
On May 24, 2026, while driving on the highway, the vehicle suddenly overheated, displayed fault code P1098, and entered reduced power ("limp mode")
GMC filings that name P1098
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P1098. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIP5675B Service bulletin2020-03-16 · Electrical System
- This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
- PIP5675D Service bulletin2020-05-20 · Air Bags
- This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
- PIP5675E Service bulletin2020-06-25 · Electrical System
- This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
- PIP5675 Service bulletin2019-09-10 · Electrical System
- This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
- PIP5675A Service bulletin2020-01-17 · Electrical System
- This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
What P1098 means
Source: SAE J2012 / OBD-IIP1098 is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
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 P1098 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 11 manufacturer filings and 22 owner reports naming P1098 on 5 GMC model years (2020–2023). 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 P1098 appear on most?
2021 Sierra (11 documents), 2020 Acadia (6 documents), 2023 Sierra (6 documents).
Does P1098 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.