We own a 1997 Dodge, Grand Caravan SE Sport, 3.3L.
I am having a problem with the door locks. I do not have a remote door fob
for this vehicle, but I suspect it can operate with one. This vehicle has
the factory alarm. When using the key to unlock the doors the locks are hard
to turn they jump  up and down, some times it takes as much as  5 mins to
unlock the door and get it in, Not so bad in the summer , but with the
winter coming I could use some help with this problem.

Any suggestions?

Tony