General Motors Thursday recalled all 1.6 million 1984 to 1990 Chevrolet Camaro and Pontiac Firebird cars because of possible seat belt defects.
The company said ultraviolet solar rays could weaken the seat-belt buckles' red release buttons.
The latch then may not hold the seat belt in place, which could make the device inoperative.
GM said repair priority would be given to Camaros and Firebirds whose buckles fail to latch or to release and to those whose red button is broken. Owners of those cars should contact dealers promptly.
Owners who find that their cars' buckles work properly do not have to contact dealers immediately, but should check the buckles periodically, the company said.
Beginning this fall, GM will begin replacing or repairing buckles on cars that did not need immediate attention. Repairs or replacements will be done free.