RepairPal Certified shops can diagnose and repair your 2016 Cadillac Escalade. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
First: if you are still underneath 3 years / 36,000 miles: Seek warranty repair guidance from your local dealership.
If not, are you saying the vehicle starts and the radio, navigation system and heater does not work? Or nothing works?