The seat belt was locked?
If so, my '98 did that once and it "reset" itself after a couple of days. Just looked on Youtube and a module with ball in it under the center console is the issue. Seems to me if you tap that module to reset the position of the ball, the belt should unlock?
All the ones I saw the belt was fully extended, they wouldn't wind back up. Usually just the drivers side, but in some cases, both sides. For me to see it on almost every truck I looked at, I thought it was a more common issue.
(shoulda made that more clear rather than just say 'inop')
