GMC 1993 Safari Owner's Manual page 58

Seats and Safety Belts
Before replacing any safety belt, see your dealer for the correct part number.
You'll need the model year and model number for your vehicle. The model
year is on your title and registration. And you can find the model number on
the certificationhire label on the rear edge of the driver's door.
K2447
The model number on the replacement belt must be listed on the safety belt
you want to replace.
1 4 4