transmission on 2000 Kia Sportage

doesn't want to shift into 3rd

2 answers
Check the fluid level. I have heard of some simple software upgrades for some Kia transmission issues but your Kia may be a little too old. Kia as a car manufacturer put a lot of great technical information and work shop manuals on line for free for Kia owners. www.kiatechinfo.com
Call several Kia dealers ask for there service department, ask if they have seen this problem before.
keep pullin parts off untill you find then lmao