So, is there a range of money I should expect to pay to fix it, like best case scenario to worse case scenario? The speedometer does work fine. I would love to know it's not like a 300+ problem! Please ease my mind??

I currently have a 93 J30 and my cruise control also doesn't work. My mechanic replaced the module and it still doesn't work. I am also looking for answers to reslove this issue.