Service bulletins for the 2018 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.
1071 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Trailer hitch are shown. Show all
| 18NA240 | 2021-12-20. Service bulletin. TRAILER HITCHES; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to locate a possible leak at the receiver dehydrator plug and to only replace the plug if the cause for the customers concern. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.