99 Deville Transmission Shift Linkage

Reference: 99 DeVille with automatic transmission shift lever located on the steering column.
The transmission shift lever on my car has gotten increasingly hard to move
. I removed the shift cable at the point where it attaches to the transmission shift post to determine whether the binding was in the transmission or in the shift linkage between the steering column and the transmission. With the cable removed from the transmission, movement of the gear shift lever on the steering wheel column remained very difficult. I did not remove the cable at the point where it attaches to the shift lever on the steering wheel column.
Is this a common problem with this model vehicle?
Any suggestions you can provide on the cause and corrective action will be greatly appreciated.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.