GMC Terrain owners have reported 1 problem related to horn (under the electrical system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Terrain based on all problems reported for the Terrain.
The contact owns a 2018 GMC Terrain. The contact stated while driving at an undisclosed speed, the contact became aware that the horn was inoperable. There was no warning light illuminated. The vehicle was taken to the dealer. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was not available.
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