third gear does not kick in on 1994 Buick Regal

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
My buick drive in 1st and 2nd gear fine but when Iget to third it does not kick in. fluid looks fine. I don't smell anything burining while driving. What could the problem be?
(1) Answer
You could have a electrical issue or an internal transmission issue causing your loss of third gear. The first step would be to check the powertrain control module (PCM) for fault codes. Any stored fault codes will need to be diagnosed and repaired. If there are no codes stored in the PCM then the fault is most likely inside the transmission.