Are you talking about a military style belt buckle? One that the belt slides in behind the shiny face and over a pin that protrudes out the top and bottom but only leaves a "button" head to grasp? Also has an adjustment catch in the back that the other end of the belt goes through (the end without the shiny metal tab on it).
Fasten seat belt.
seat belt
Yes.
Fasten your seat belt.
Fasten the seat belt.
Fasten seat belt.
The seat belt might not fasten in a 2000 Chevy Blazer because there is a foreign object in the slot where the seat belt fits. Even the tiniest of objects can cause the seat belt to not latch properly.
yes
Pete and Gladys - 1960 Fasten Your Seat Belt 2-2 was released on: USA: 25 September 1961
Fasten your seatbelt.
That light will go out as soon as you fasten every seat belt in the car.
Fasten your seat belt or live with it, it will stop after a few moments.