Reply to thread

Message: <blockquote data-quote="ORVietVet" data-source="post: 26354" data-attributes="member: 9438">About a week ago, got up and TB would not crank and had a dead battery. Did locate the parasitic draw to a plugged in cell phone charger that the plug lights up when installed. Been a week since all this with no parasitic draw problems. I have a Power Probe PPDRAW tool that I use to monitor and found no further problems......EXCEPT....the SERVICE 4WD light is now on when started and stays on. Is causing no parasitic draw problems. I pulled codes and got U1026-Lost Class 2 Communications With ATC.....U1000-Class 2 Data Link Malfunction and C0550-ECU Malfunction.There is no driving problems. The Drive selection switch does not light up. It is a 2wd-awd-4hi-4lo switch. I checked the ATC fuse by sight and both sides with test light. I also located the ATC module, d/s end of dash behind pop off panel. I unplugged all 3 connectors and plugged back in with no help.The strange thing is that all was good till the dead battery and then this light comes/stays on now. I have also had key off and pulled the ATC fuse for 1 minute and reinstalled and no luck. My next step is to reattach my Foxwell NT710 GM only scanner and try to see where the communication problem lies.</blockquote>