I have taken my vehicle into Gainesville Nissan several times over the years, they said they couldn't find anything wrong with it. On Easter Sunday, me and my family heading to church brake light came on so as I applied the brakes to stop, gets this loud grinding noise like something was coming loose. Turn the vehicle off, was afraid to drive it, so I left it in the parking lot and got a ride to church. Return after church, started it up, brake light went off. So I drove it home, been in garage since, don't know what step to take to get them to fix it.