The scan tool not connecting could be a scan tool issue or a power or ground issue with the DLC. It could also be a problem with the VCM which could be the cause of the start then stall.
I attached the wiring diagram to start testing the DLC for power and ground. You should have power on pin 16 at all times and then ground on 4 and 5. Let's check those and then hook the scan tool to another vehicle and make sure it can connect to another vehicle.
Once we know the results of this we can move onto the next step because depending on the results this may not be related to the stalling issue.
Sunday, July 5th, 2020 AT 7:33 PM