Kia Troubleshooting Questions? Ask a Mechanic
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.It would be hard to say wit 100% certainty that the fuse box is related to the transmission concern and in most cases if there is a problem with the transmission at some point it will rest a fault code and or codes. If you are reluctant to spend the money for the fuse box repair then I would wait and see if at some point the transmission acts up again and when it does wait and see what the fault code and or codes set. If its set the shift solenoid code again then the problem is likely going to be a problem with it or the connection and circuit to it.
If the solenoid is actual bad it will usually always set a fault code, if your not getting any codes then its not likely bad. I understand your frustration for sure but to some extent they are correct, with out a fault code to go on it can very difficult to diagnose with 100% certainty. You have nothing to loose by trying the fuse box . At least that will rule it out for sure.