I had a computer fixed for my truck and nothing is to my liking. Can?t get fans to come on with a/c, fuel gauge reads backwards and cannot get cruise to work. Truck is 05 original 4.3. Ecu was 03 4.8 but is behind 5.3. I think maybe I need to load a stock OS from 05 5.3 truck then do something for manual trans. I have done a lot of reading on here but not found exactly what I?m looking for.