SAAB 9000 CSE Turbo 1998 Transmision problem

Hi! I have SAAB 9000 CSE 2.3 Turbo 1998. Few days ago I stopped at a STOP sign and the car didn’t want to go forward. It was going backwords but not forward. It was strange because my Air Conditioner stopped. It was blowing but cold. I towed the car and on the next morning it was working just fine. It goes forward and the conditioner is OK. Can you help me?

“It was blowing but cold” sounds like the AC is working fine.
What do you mean “going backwards”?

Hi! The reverse was working. The direct,1,2,3 not. And I said there was no heat at this time. What’s the relation between them?