Buick 1994 Roadmaster Owner's Manual page 64

I
If belts are cut or damaged, replace them. Collision
damage also may mean you will need to have safety belt
or seat parts repaired or replaced. New parts and repairs
may be necessary even if the belt wasn't being used at
the time of the collision.
Q:
What's wrong with this?
A:
The belt is torn.
Torn or frayed belts may not protect you in a crash.
They can rip apart under impact forces. If a belt is tom
or frayed, get a new one right away.