Service bulletins for the 2018 GMC Terrain
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.
1345 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Trailer hitch are shown. Show all
| 17427 (Bulletin | 2018-05-07. Service bulletin. STRUCTURE; TRAILER HITCHES. 17427 - Service Update. Certain vehicles equipped with a trailer package (RPO V92) may have a trailer turn signal and brake lamp that is inoperative on a connected trailer due to an incorrect calibration. Dealers are to reprogram the body control module. |
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| 17396 (Bulletin | 2018-05-07. Service bulletin. TRAILER HITCHES; EQUIPMENT. 17396- Customer Satisfaction. Certain vehicles were supplied with a vehicle owner manual that overstates the intended un-braked trailer weight by up to 1000 lbs. Dealers should print and insert the revised owner manual page(s) included in this bulletin. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.