U3578 on Chevrolet vehicles
U3578 is named on 6 Chevrolet model years (2024–2026): 12 manufacturer filings and 1 owner report in NHTSA’s files, across Silverado, Blazer, Equinox.
Which Chevrolet model years name U3578
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2025 Chevrolet Silverado | Not specified | 3 | 1 |
| 2026 Chevrolet Silverado | Not specified | 3 | — |
| 2024 Chevrolet Blazer | Fuel/Propulsion System | 2 | — |
| 2024 Chevrolet Equinox | Fuel/Propulsion System | 2 | — |
| 2025 Chevrolet Blazer | Not specified | 1 | — |
| 2025 Chevrolet Equinox | 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.
Chevrolet filings that name U3578
Source: NHTSA manufacturer communicationsBulletins and campaigns Chevrolet filed with NHTSA whose summary names U3578. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIP6081 Service bulletin2025-08-22 · Unknown Or Other
- This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, U3581, U3582, U3583, U3584, U2BAA, U2BAB, U2BAC, U2BAD, U2BAE,
- PIP6081B Service bulletin2026-02-23 · Unknown Or Other
- This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, U3581, U3582, U3583, U3584, U2BAA, U2BAB, U2BAC, U2BAD, U2BAE,
- PIP6081C Service bulletin2026-07-14 · Unknown Or Other
- This Pi is to let dealer know that a program issue has been released and to not replace any hard for codes P2C8A, P2C8B, U3577, U3578, U3579, U357A, U357B, U357C, U357D, U357E, U357F, U3580, U3581, U3582, U3583, U3584, U2BAA, U2BAB, U2BAC, U2BAD, U2BAE,
- PIP6021 Service bulletin2024-11-01 · Fuel/Propulsion System
- This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp) illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge. In these instances, it is advised to perform BECM (Battery Energy Control Module) programming and execute the Manual Reset Shunt process. This ap
- PIP6021A Service bulletin2025-04-29 · Unknown Or Other
- This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp) illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge. In these instances, it is advised to perform BECM (Battery Energy Control Module) programming and execute the Manual Reset Shunt process. This ap
What U3578 means
Source: SAE J2012 / OBD-IIU3578 is a manufacturer-specific code: the second character is a 3, 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 Chevrolet 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 U3578 a known problem on Chevrolet vehicles?
It is a documented one: NHTSA's files hold 12 manufacturer filings and 1 owner report naming U3578 on 6 Chevrolet model years (2024–2026). 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 Chevrolet models does U3578 appear on most?
2025 Silverado (4 documents), 2026 Silverado (3 documents), 2024 Blazer (2 documents).
Does U3578 on a Chevrolet 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.