wiring harness on 2000 Kia Sportage

Is there a recall on the wiring harness,because my car & others seem to be having problem of pulling up hills or not at all. The mechanic have change everything possible,and he found out it was the wiring harness leading to control box.

Asked by for the 2000 Kia Sportage
I just checked the Factory Technical Service Bulletins for your issue and so far I have found nothing about the wiring harness, sorry to say.