GM Repair Problems? Ask GM Repair Expert Now.
Hi,I'm Ron and i will be helping you today.Stand by for a moment while I prepare your answer.
They need to attach a data logger to the computer system to catch this dilemma. This tool attaches to the computer system connectors and constantly records ALL the computer's data and log it for up to 40 hours. When the problem occurs, it is automatically saved in the tool. Then the dealer removes it and reads the data, then presto, problem found after they plug it into their computer. I've been doing this type of diagnostics for intermittent problems for years.
Please understand that I don't know your skill level or toolsyou have to assist us. Also understand that I can't see, smell,hear, or touch the vehicle either, so your patience isappreciated. JA is a great Q/A site, but it does not replace arepair shop. So please don’t shoot the messenger if I have todeliver bad news:)If you are satisfied with my answer, I would greatlyappreciate a 5 star rating now before you leave the site and Iwill still assist you after you have rated me too if anotherquestion pops up. I don’t get credit for helping you untilyou rate me
Thanks again, Ron
Are you saying that you already knew about data loggers? really?
Then just have them put this tool on the connector and let it happen to you again. It will still get recorded and you just drive back to them so they can extract the information. I know it's a pain, but it's what will find what is wrong, unless the service manager is willing to drive your car to work and home until it does it.
Thanks again and please remember to rate me 5 stars nowand keep this link in case you need me again later on.I don’t get credit for assisting you until you rate me
Will be back in o e hour, on a service call. Sorry.
Okay, I'm back. What was the question I missed, I don't see it.
There are no other ideas for such an intermittent issue like this, plus the data logger keeps running even after 40 hours of driving, it just rolls over the data. I'm sorry this is such a problem, but there isn't anything I can do to make it happen sooner than that. i gave you the absolute best way to find this. Let me know if you need anything else, and I'm sorry for the wait.
Also, a data logger is smaller than a pack of cigarettes and you can't even see it when it's plugged in.