- Aug 5, 2009
- coatesville indiana
I'm working on a cat 740 haul truck that will not start and the hours do not display on the dash. I have checked the power and grounds and the cat bus and can bus. The codes are for communications error and I'm pretty sure it's the trans ecm. Do you guys program the new one yourself or just let cat do it. It's something I have never done but thinking it's something I need to learn. I hate having to call in the professionals at cat.