My truck goes in Monday for the CEL. I haven't had to take a truck in for service for over 10 years. So my question is should I take in all the information I have found, i.e. STAR case number, and any other info know about everyone else's trucks or is that insulting to the service guys? I hate to have them spend a day on it and have them just shrug their shoulders but I don't want to offended them.