Hi transman - thanks for the note. I just tested it out, and, while reverse still doesn’t work, I tried shifting into 2nd and 3rd gears while driving forward, and it seemed to work fine (no change from having it in drive - should there be a change? in rpms or something else?).
Does this rule out a sun shell issue?
Also, can I drive the car to a trans specialist (do I need a tow truck?), or am I going to be risking messing it up further?
Addendum: I don’t think I have a 4th gear on this car, though I don’t know a thing about cars so I may be missing something obvious. There’s a 1, 2, and 3 on the dashboard, along with D N R P, but no 4.
Thanks transman and cigroller for your help on this!