U1345 on Chevrolet vehicles
U1345 is named on 5 Chevrolet model years (2017–2022): 13 manufacturer filings and 0 owner reports in NHTSA’s files, across Bolt EUV, Bolt EV, Traverse.
Which Chevrolet model years name U1345
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2022 Chevrolet Bolt EUV | Engine | 3 | — |
| 2022 Chevrolet Bolt EV | Power Train | 3 | — |
| 2018 Chevrolet Traverse | Electrical System | 3 | — |
| 2019 Chevrolet Traverse | Engine | 2 | — |
| 2017 Chevrolet Traverse | Electrical System | 2 | — |
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 U1345
Source: NHTSA manufacturer communicationsBulletins and campaigns Chevrolet filed with NHTSA whose summary names U1345. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 22-NA-139 Service bulletin2022-07-01 · Engine And Engine Cooling
- This service bulletin provides repair information to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated and/or Driver Information Center (DIC) Displays Service Transmission Now, Unable to Shift Soon or Service Transmission, Unable to Shift Message with DTC U1345 or U135A Set.
- PIC6463 Service bulletin2022-06-30 · Electrical System
- This Preliminary information communicates to the dealer if a vehicle comes in for an MIL or a message with DTC U1345 Engine Control Module LIN Bus 1 (or Bus 21) and/or DTC U135A that engineering is working on the issue and to clear the codes and return to the customer, Mil and message still may be one but at that time will drive normally for the next 100 ignition cycles.
- 22-NA-139 Service bulletin2022-07-26 · Power Train
- This service bulletin provides repair information to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated and/or Driver Information Center (DIC) Displays Service Transmission Now, Unable to Shift Soon or Service Transmission, Unable to Shift Message with DTC U1345 or U135A Set.
- PIT5609 Service bulletin2018-03-27 · Electrical System
- This Preliminary information communicatesSES lamp with DTC U1345. Inspect connection at the upper and lower Aero Shutters for water. Clean and repair as needed.
- PIT5609A Service bulletin2019-06-13 · Engine And Engine Cooling
- This Preliminary information communicates SES lamp with DTC U1345. Inspect connection at the upper and lower Aero Shutters for water. Clean and repair as needed.
- 19NA215 Service bulletin2019-09-17 · Structure
- This technical bulletin provides repair information to correct a customer concern of Service Engine Soon (SES) Lamp Illuminated, and technician finding DTC U1345 set.
What U1345 means
Source: SAE J2012 / OBD-IIU1345 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 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 U1345 a known problem on Chevrolet vehicles?
It is a documented one: NHTSA's files hold 13 manufacturer filings and 0 owner reports naming U1345 on 5 Chevrolet model years (2017–2022). 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 U1345 appear on most?
2022 Bolt EUV (3 documents), 2022 Bolt EV (3 documents), 2018 Traverse (3 documents).
Does U1345 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.