My 96 was giving me the same problem.
F-body.org has a fix.
what I did was just took out the assembly and swapped the drive arm 180
used a battery post puller to pull it off, it's on tight.
They only use half of the plastic gear, so when you swap it 180 it uses the
Worked great and it didn't cost 200 clams at GM.
The f-body.org says to take the motor apart,and swap the gear180. But then
you have to epoxy it back together.
Dave 96 Trans am