Cadillac Deville Won’t Go Into Gear

Where should I begin? Your transmission is not answer the call of its nature, at all, from the sound of your question so I would think you’d know that the unit is likely shot. I think that since your car is 19 years old (car years are something like dog years only the wear is worse and use about the same factor of 7). Since your car is 19 car years old (actually 20 now), it is around 135 years old in human terms (it could even be older as no one really has a good solid age/use conversion table). At that point in anyone’s life — if you get to stay around that long — everything just starts to shut down. Your transmission is at that point, too.

It is quite likely that all of the major systems are shot. If you want specifics, see if an OBD-II diagnostic will reveal any hard error codes for an indication of where a technician should start the hunt. If your vehicle were mine, I’d just replace the transmission — if you like the car, it’s the only choice. If you do, you are looking at a $3,200 charge.