CEL came on

CEL came on today. Pulled the code and it said P0700 trans control system malfunction. Called AutoZone, they thought it was the trans control module but they do not stock. Is this a dealer item only? How hard to replace? Looking at the manual I have it looks to be fairly easy

Thanks, Kerwin
97 Cherokee Sport
4.0 automatic

Anyone know what years will interchange for this part? I am going to call some wrecking yards but don't know what years I should be looking for

Thanks, Kerwin