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Service bulletins for the 2018 Buick Regal

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

900 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Wiring and fuses are shown. Show all

Bulletins, newest first
PIT59622023-01-30. Service bulletin. ELECTRICAL SYSTEM:WIRING. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
100089005G2019-05-13. Service bulletin. ELECTRICAL SYSTEM:WIRING. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
100089005H2019-03-18. Service bulletin. ELECTRICAL SYSTEM:WIRING. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
180582018-06-04. Service bulletin. ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM. 18058 - Service Update. Certain vehicles may have been built with a missing high-speed controller area network (CAN) BUS bridge (jumper) wire at the body control module (BCM) connector. Vehicles without these circuits can have intermittent communication issues on the CAN BUS, affecting functionality of several electronic modules, leading to various electrical concerns including a walk home failure. Install missing circuits to BCM connector X6.
17NA3172018-05-21. Service bulletin. ELECTRICAL SYSTEM:WIRING. This technical bulletin provides a procedure to repair the crankshaft positioning sensor wiring harness by installing a new wiring harness.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.