The contact owns a 2018 GMC Terrain. The contact stated that while driving at 35 MPH, the brake pedal was firm and became inoperable. No warning light was illuminated. The vehicle was towed to a dealer to be diagnosed. The contact was informed that the failure was due to a faulty vacuum pump. The vehicle had not been repaired. The manufacturer was made aware of the failure and advised the contact to call NHTSA Hotline for assistance. The failure mileage was approximately 66,084.

- Lincoln, NE, USA

The contact owns a 2018 GMC Terrain. The contact stated while driving at various speeds, the brakes became inoperable. While the vehicle was in park(P), the gear shifter inadvertently shifted into an unintended gear. The brake assist warning light was flashing. The vehicle was taken to the local dealer where it was diagnosed that the vacuum pump and brake booster needed to be replaced. The vehicle was repaired four times but the failure persisted. The manufacturer was contacted and informed the contact to take the vehicle to a local dealer if the failure recurred. There was no additional assistance provided. The approximate failure mileage was 131,000.

- Marblehead, MA, USA