Hi WonderMur,
There's a little molded rubber/plastic button on the seat belt that keeps the belt from retracting too far into the back of the seat. If it's broken off, the belt retracts too far and locks. If you can work the belt out again, you'll probably notice it's missing. At least that's what caused mine to lock up like that. I replaced the button with a chrome one that had teeth on the bottom that I could push through the belt and mash them down. Haven't had the problem since then. (I don't know where that chrome button came from, found it laying around my garage)
__________________
Bob
|