I talked to a guy this week who had a 93 Lumina car like mine and he said it definately can
be disconnected, his was at time of purchase. He has sold the car since.
Also, I rec'd an email from a buddy who asked his GM tech friend, this is how he replied:
This is a very simple fix it is just a matter of cutting the wire to the transmission range switch that feeds an imput into the power locks to lock the doors in park.
If anybody can further explain to me how this is supposed to be done that would be great. I don't mind getting underneath the car and trying myself but I need clearer instructions.