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GMC TSB #17427 (Bulletin
2018 GMC Terrain
TSB Document:
Affected Component: TRAILER HITCHES
- Summary
- 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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