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Service bulletins for the 2023 GMC Sierra

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.

1426 on file from NHTSA, as of 2026-10-19.

About B2BA1 on the 2023 GMC Sierra: what the code means, and the bulletins and recalls about the same components.

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By component

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Only bulletins with trouble code: B2BA1 are shown. Show all

Bulletins, newest first
24-NA-0632024-07-11. Service bulletin. FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of a Service Drivers Assist Message Illuminated in DIC with DTC B2BA1 Set.
24-NA-0632024-04-10. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of a Service Drivers Assist Message Illuminated in DIC with DTC B2BA1 Set.
24-NA-0632024-04-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of a Service Drivers Assist Message Illuminated in DIC with DTC B2BA1 Set.
PIT60002023-05-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates to the field how to address DTC: B2BA1 for Map module version being out of date and causing a Service Drivers Assist message.

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