It would likely depend on the actions taken.
A Google search yields ambiguous results but suggests that any installed parts often possess their own guarantee, perhaps extending the warranty for that issue until May 2026 if the part was purchased separately.
If a new gearbox control module (TCM) has been installed, one would anticipate a minimum one-year warranty, assuming it was purchased independently.
However, if they merely reprogrammed it, you may have no recourse.
I anticipate that iooi, the super admin, may arrive at some point, as he appears to possess extensive knowledge regarding warranty terms and may be aware if repairs are covered beyond the usual seven-year period.
I believe this topic was addressed a few years prior, so consider conducting several searches on the forum using various terms to ascertain if any conclusive information emerges.
If the gearbox has a method to assess the oil level, it is advisable to verify it, since insufficient oil in an automatic gearbox can result in the retention of gears due to inadequate pressure to activate the solenoid for gear shifting.