1970-1977 Corvette Seat Back Release Strap Locking Tab

Pictured below is the locking tab that holds the seat back strap in place.  This tab is on the leave mounted inside the seat back release mechanism.  If yours is locked and won’t release you’ll need to pry below (between the two arrows shown in the lower picture) the strap and the locking tab to release it.

seat back release 1a