99 Jimmy

we have a problem, we have replaced our transfer case control module and for some reason it quit working again, someone told me that my encoder motor
could be bad...How could I tell for sure?? When it does work the 4x4 shifts fine. this is on a 99 Jimmy with the 4 button system
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.