83 _Z28_CFI

Hi. My names Jake. I have a 1983 Camaro Z-28 with a stock 305 ci with Cross Fire Injection and a 4 speed automatic transmission. It won't shift into park. All the other gears work just fine. It goes all the way up. but it won't lock into park. It normally didn't go into park unless you let it kick into reverse for a few seconds. Now it won't go in at all. My emergency brake don't work other-wise I would use it. I could really use some help on this guys. Thanks for looking!!