Service bulletins for the 2021 GMC Acadia
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.
847 on file from NHTSA, as of 2026-10-19.
About U0155 on the 2021 GMC Acadia: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
By topic
Only bulletins with trouble code: U0155 are shown. Show all
| 21-NA-054 | 2024-05-15. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides repair information to correct various functional concerns of the Instrument Cluster and DTC U0155. |
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| 21-NA-054 | 2024-03-29. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This service bulletin provides repair information to correct various functional concerns of the Instrument Cluster and DTC U0155. |
| 21-NA-054 | 2023-02-23. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct various functional concerns of the Instrument Cluster and DTC U0155. |
| 21-NA-054 | 2022-11-03. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct various functional concerns of the Instrument Cluster and DTC U0155. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.