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U1345 on the 2017 Chevrolet Traverse

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name U1345
PIT5609A2019-07-08. Service bulletin. 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.
PIT56092018-05-21. Service bulletin. This Preliminary information communicatesSES lamp with DTC U1345. Inspect connection at the upper and lower Aero Shutters for water. Clean and repair as needed.

2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.