Buick TSB #18058
2018 Buick Regal
TSB Document:
Affected Component: ELECTRICAL SYSTEM:WIRING
- Summary
- 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.
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