2007 VNMT42

Have a 2007 VNMT with the D12 motor. Truck suddenly lost cruise, jake brake and interior turn signal flasher indicators in dash. Exterior turn signals work on truck and trailer, and also when I shut off the key the engine continues to run for 4 to 5 seconds. ECU malfunction on dash. Took to Denver Volvo, who had it for 10 days and don’t have a clue how to fix it. Somewhere in the bus line there is a voltage irregularity. This trucks home is Phoenix AZ, anyone have an idea of fix or know of a reputable independent or Volvo dealership who has a skilled technician who can find this?

 

I would be interested in speaking with them