So I was driving around today and I went to go from 4th back to 3rd but I couldn't get outta 4th . Anyway I made it home stuck in 4th luckily I didn't have to stop anywhere .once I got home I turned the car off and had jam it really hard to get outta 4th but after that went another drive and it seems to be fine . It's a stock a12 with a standard 4 speed .
Any help or ideas on what it could be would be aprreciated

Thanks

Rob