How do you repair stripped gear shift shaft?

To repair a stripped gear shift shaft, first, remove the gear shift lever and inspect the shaft for damage. If the threads are stripped, consider using a thread repair kit, such as a Helicoil, which involves drilling out the damaged threads and inserting a new threaded insert. Alternatively, you can use a tap to re-thread the shaft to a larger size if space allows. After the repair, reattach the shift lever securely to ensure proper functionality.