^^^^ agree. You are on the right track.
I bought two fairly expensive rebuilt rear wiper motors on my 97 that did not last more than a few months. Junk rebuilt motors. Finally got an OEM rear wiper motor from a salvage yard, which was less than 25% of the cost, and have not had any problems since.
I seem to remember back in the 80’s when OEM was junk, and the aftermarket stuff was always superior. Not anymore. Avoid junk rebuilt rear wiper motors.
Good luck.