Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
hi, i have a 2019 traverse i am getting 120 oms at the dlc i have went down the line unplugging many modules i have no communication with the bcm,ecm,ebcm and a few more and nothing has changed unplugging any of them till i got to the telematic communication interface control module when unplgged goes to OL is this module the 1 with the resister in it should it go to OL ? thanks in advanced
For network diagnosis, you will require a good diagram. I prefer OEM over simplified diagrams for network issues, especially for general motors products.
In the case of your 19 Traverse, pin 6&14 of the data link connector go to the gateway module. This means you can not check network resistance at the DLC
Yes, that will work. You can essentially unplug any module on the network and ohm the network from each end. For example, the network wires enter the EBCM on 41 & 25 and 42 & 26. With the connector unplugged, put your meter on 41&25 and check for 120 ohms. If it's good, the network is intact from that point out. Then do the same 42&26. If you don't have 120 ohms, then there's a problem with the network from that end out. You can unplug any easy access modules on the network and keep moving along until you isolate the problem area.
Edit: Trying to attach a diagram is not working at the moment...
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